The team investigate the murder of a Navy Officer assigned as a tech liaison with a private developer; Pride turns the carport into an auto shop.

A murdered petty officer -- with a proposal and an engagement ring -- is found in a Mardi Gras float storage facility; the members of the team are baffled when they cannot locate the victim's girlfriend.

The team reopens a cold case when a stolen Navy-issue gun turns out to belong to a chief petty officer who died 40 years ago; the team makes their annual Thanksgiving dinner together.

Cabe's ex-wife needs the team's protection after she discovers evidence that suggests a prominent congressman's death involved foul play.

The team must recover stealth technology from a military plane that was shot down in Bosnia; Walter's sister visits with Sylvester at the garage.

Sylvester ends up in critical condition after accidentally triggering an explosion during an investigation; the team must remain focused on finding the culprit.

On Christmas Eve, a boy is trapped in a beach-side cave, where the rising tide threatens his life; the team races to find a way to save him.

A nasty divorce gets worse when the husband's mistress turns up dead, and the body count continues to rise as the complicated relationship unravels.

Horatio must fire a member of his team when the problems of that person taint the current investigation.

After a suspected carjacker is killed, the team learns that he may have been involved in drug smuggling off the shore of Miami.

When a serial killer is caught and identified as having an extra Y chromosome, the team mistakenly thinks that it has closed the case.

A hostage situation turns into murder; Horatio thinks one of the suspects may be his son.

The team heads into the jungle to try to find a missing witness in a high-profile murder case before the assassins that are after her.

An afternoon pleasure cruise turns into a nightmare when pirates attack and take hostages.

The team must stop a vengeful bomber; Danny's fun-loving brother (Dane Cook) visits unexpectedly.

A science-fiction fan dressed as a superhero is murdered; McGarrett receives a visit from a CIA agent interested in finding Yakuza.

While on a hike, Danny and McGarrett find a murder victim; Chin Ho and Kono go home to visit their ailing aunt.

After a famous photographer is murdered while doing a magazine shoot, Danny is happy to learn that he will be interviewing the swimsuit models.

After receiving valuable information from Agent Jenna Kaye, the team closes in on Wo Fat; Danny is exposed to a deadly neurological agent.

The Five-0 is targeted by Wo Fat after getting too close to the truth about the criminal mastermind and his associates.

While McGarrett awaits trial for the murder of the governor, he receives an unexpected visit; Kono is suspended.

Lori Weston, an officer with excellent profiling skills, joins the Five-0 to ensure McGarrett and the team follow new rules set in place by Gov. Denning; a teenage paddleboard champion is abducted.

Joe White, McGarrett's mentor, asks the team to investigate the death of a Navy SEAL, which was previously ruled a suicide; Chin Ho is concerned when Kono starts fraternizing with a group of dirty ex-cops.

The team investigates the murder of a deep-sea diver famous for the valuable treasure he finds.

The team's investigation into a volleyball coach's murder reveals more bad news about Kono; Chin Ho reconnects with his ex-fiance.

McGarrett takes part in a charity MMA fight while investigating a wealthy restaurateur's murder; NCIS Agent Kensi Blye examines a video of McGarrett's father.

Two young people filming a documentary about a Hawaiian burial site are murdered; during the investigation, a drifter (Robert Englund) puts a curse on Danny.

When Russ' first love, Emilia, is kidnapped by the same rebels he fought during his private military contract days, he takes the Phoenix team to a small, impoverished town to rescue her and rid the town of the rebels for good.

A double date descends into chaos when Mac and Desi witness a murder in the back of the restaurant; as they work to find the killer, Riley tries to keep the secret about her and her friends' "day jobs' from her new boyfriend.

After Oversight is almost killed in a bombing, he recruits Mac to help him find the suspected bomber; Mac meets his Aunt Gwendolyn.

Los Angeles' power grid is taken hostage in a ransomware attack resulting in a citywide blackout; the team discovers the ransomware code used was written by Riley years ago.

When Mac is put into a dream state to help him recall key evidence found in Nikola Tesla's secret lab that could stop Codex's deadly plot, he encounters Nikola Tesla, Alexander Graham Bell, Thomas Edison and his mother.

Mac is placed inside a fake prison cell with a top Codex operative, "The Merchant," to gain his trust and get intel on their next move.

The team is forever altered when MacGyver's Aunt Gwen gets into his head and convinces Mac and Riley to join Codex; Matty and Russ take their concerns about Codex to the White House.

Mac and Riley's mission is interrupted when Russ, Desi and the Phoenix team move to prevent Codex from detonating a weapon of mass destruction; the team discovers Russ' real reason for purchasing the Phoenix Foundation.

The BAU is called to New York when several casualties of a brutal nature are reported in Central Park.

The BAU is called to investigate a series of homicides in which cryptic messages are found inside the mouths of the victims.

The BAU is called when the New Orleans Police Department discovers a mass grave inside a vandalized above-ground crypt in a local cemetery.

The FBI's assistant director of national security joins the BAU as it investigates the quadruple homicide of a group of roommates in St. Louis.

The BAU meets in secret to investigate a subject who appears to be kidnapping and photographing young women.

The BAU is called to Oklahoma to investigate a murderous clown who is terrorizing a town.

The BAU travels to Chicago to investigate a case where red roses are left on victims; Rossi gets an unexpected visit from his ex-wife.

The BAU takes charge of a hostage situation at a law firm where Matt Simmons' wife works.

The BAU is called upon when bioterrorism is suspected in a series of mysterious deaths; Garcia visits her stepbrother to take care of a difficult family issue.

The BAU is called to Taos, N.M., when someone targets victims' temporal lobes.

The team questions the credibility of a former FBI agent's bizarre account.

When Reid and Garcia are abducted by a mass murderer, it's up to the rest of the team to find them; the BAU looks to their past to solve why the two heroes have been targeted.

The team tracks a serial killer when remains of numerous victims are found in the walls of an elderly couple's home; the hunt becomes urgent after the BAU learns the killer's specific ritual of when to strike; Rossi reconnects with his ex-wife.

Packages with gruesome contents are delivered to six people in the Washington, D.C.. area; Simmons and Kristy struggle to connect with their son, David, who is suspended from school for aggressive behavior.

Soon after the BAU steps in to help local law enforcement isolate a suspect for a murder, a second person who is related to the first victim is killed under similar circumstances; Prentiss is concerned about Garcia's behavior.

The BAU investigates a spooky local ghost story of the "Tall Man" and the clues it provides when two people go missing in the woods; a third person mysteriously surfaces the following day with limited details as to what happened to her friends.

After the Internet turns a high-school student into an international sex symbol, information leaked about Horatio puts his life in danger.

Horatio goes in search of his son, who is missing after a deadly prison break.

While probing the mysterious death of a college student in a car fire, the CSI team finds evidence indicating that a former colleague (Rory Cochrane) may still be alive.

A retired sports legend is stabbed to death, but Alexx is unable to take the body for an autopsy.

Bizarre occurrences distract investigators as they track a serial killer who struck during an eclipse of the sun.

The investigation into a model's murder sends Horatio back to prison, where he must work with a former nemesis to clear his son's name.

A family vacation turns deadly, forcing the CSI team to find the killer before the survivors decide to seek justice on their own.

Calleigh's professional and personal life are in danger after someone attempts to murder her.

A wealthy family's nanny is found stabbed to death in their home during a party.

A rare and illegal machine gun vaporizes three weapons smugglers, launching the CSI team into a desperate search for it.

The team uncovers a methedrine lab in a murder victim's apartment; an unscrupulous FBI agent has a secret life.

Horatio's ex, Kyle's mother, resurfaces as a billionaire's widow, who will do anything to get her son back.

When Max (Ryan O'Neal) goes on trial for the murder of FBI Deputy Director Robert Kirby, all the team members but Brennan are called as expert witnesses for the prosecution.

An aspiring singer (Ace Young) is murdered and, as Brennan and Booth investigate the musician's fans and foes, one obsessed woman transfers her affections to Booth.

A human jawbone found at the Jeffersonian alerts Brennan and the team that the Gormogon serial killer has struck again; a lab explosion lands Zack in the hospital; Gormogon's silver skeleton disappears from the vault.

When Brennan and Booth go to London to guest-lecture at Oxford and Scotland Yard, local officials ask them to help investigate the murder of a young heiress; Angela's long-estranged husband returns.

When Brennan and Booth go to London to guest-lecture at Oxford and Scotland Yard, local officials ask them to help investigate the murder of a young heiress; Angela's long-estranged husband returns.

When the corpse of the host of a popular reality show is found partially decomposed in an outhouse, Brennan and Booth must separate the killer from many suspects; Booth discovers that Brennan juggles two relationships.

When Booth's son, Parker, finds a finger in a bird's nest, the team launches an investigation to find the rest of the body; Booth asks Sweets to psychoanalyze his son; Sweets confronts Hodgins about his attitude in the lab.

A teen discovers a dismembered, headless body in a pool of purple water; the team struggles to find enough evidence to locate a killer until getting insight from Zack, who studies the case at his psychiatric facility.

Booth and Brennan investigate when the remains of a disliked office manager are found in a building elevator shaft; Angela and Hodgins try to figure out their altered relationship.

Skeletal remains with remnants of breast implants are found in the Chesapeake Bay; when the body's lower half is discovered, the team realizes that initial assumptions about the victim may be wrong.

When the smashed remains of a famous artist are found in an impounded junkyard car, the team must race against the clock to find evidence of murder before the car is put on exhibit as the sculptor's ultimate display for the sake of his art.

A con man misleads the team during a murder investigation; Booth's younger brother, Jared, takes a job at the Pentagon; Brennan agrees to go on a date with Jared to a White House function.

Toby goes under cover to find a group of thieves posing as police officers.

Toby and Michelle investigate a potential conspiracy linked to a mob murder trial.

After witnessing the death of an MMA fighter, Toby looks into the business dealings of two rival leagues.

Toby's investigation into the murder of a tattooed woman leads him to believe that corporate espionage and blackmail are behind the killing.

A series of children are abducted from troubled women in St. Louis; Rossi's first wife shares shocking news.

The team investigates when multiple bodies are found in a national forest; Rossi faces an agonizing decision.

The BAU investigates when bodies are exposed by tornadoes in Kansas; pressure at work affects J.J. at home.

A woman in Garcia's survivors' support group goes missing on the seventh anniversary of her daughter's disappearance.

The team investigates when an apparent mass suicide takes place at a military academy; Morgan and Hotch clash.

The investigation of a series of bludgeonings in Philadelphia leads the team to the city's boxing scene; Hotch connects with a fellow runner while training for the triathlon.

A series of murders makes the team wonder if a notorious killer has returned; Reid wonders if he could be doing more with his abilities.

A serial rapist resurfaces in Houston and assaults his past victims; Prentiss attempts to overcome last year's trauma.

The team investigates ritualistic casino-related murders in New Jersey; a fight with her boyfriend makes Garcia think she and Morgan have gotten too close.

The team discovers multiple bodies hidden in lifeguard towers along the coast of Southern California.

The team uncovers a sinister motive for a string of brutal home invasions.

The BAU goes to Atlanta to investigate a series of murders, which they believe are being committed by more than one unsub.

Multiple married couples fostering young children are murdered in Seattle; Garcia worries that Kevin is about to propose.

When a young boy is found in the Arizona desert and another goes missing, the team searches for the kidnapper; Morgan draws on his difficult past to connect with the found child.

The team investigates a series of gothic, ritualistic murders in Oregon.

When Morgan's sister sees a woman who looks like their presumed-dead cousin, the BAU reopens the case of her disappearance.

After an infamous serial murderer is executed, women in the same Oklahoma town are attacked by a copycat; Prentiss gets nervous about making a major real estate purchase.

The team leads a class of college students through the nearly 20-year chase for a serial killer.

When the BAU is called to negotiate a situation at a federal bank, one of their own becomes a hostage; Prentiss says goodbye.

When the BAU is called to negotiate a situation at a federal bank, one of their own becomes a hostage; Prentiss says goodbye.

Mac and the team infiltrate a hotel used as a hideout for criminals and find a woman with vital information on Codex.

When Taylor's former protégé is killed while preventing a bioweapon from falling into the wrong hands, Mac and the team must find the weapon so Desi can pull off the ultimate heist before it's sold to a terrorist cell.

When Russ is kidnapped, Mac and the team must break out a previously murderous psychopath, now pacifist, from prison to help find him; while on the run, Mac and Desi are forced to confront their relationship issues.

Mac's meeting with Desi's parents goes sideways when her brother finds himself in trouble and needing their help; Russ and Matty must ask an old nemesis for assistance when their new recruitment candidate is kidnapped.

Using a cryptic postcard as their only clue, Mac and the team must solve a fallen friend's final case and bring him justice.

During COVID-19's first stay-at-home order, Mac, Bozer and Riley must stop a crime in progress at their neighbor's house; Russ' romantic fling takes on a longer and more complicated turn when they quarantine together.

A secret experimental cancer treatment Mac's developing with a friend is discovered when culprits ransack their lab, kidnap Mac's partner and plan to use the research to create a powerful new nerve agent.

Mac and team rush to help when Matty's former mentor, Ian Cain, and his embassy staff come down with a deadly, mysterious illness; Taylor and Bozer work with Jerry Ortega to infiltrate a Codex cell.

A diamond is found in the jaw of a corpse discovered at a glass recycling plant; Booth learns that he has a medical issue; Hodgins thinks a ghost is following him.

The team attempts to find The Puppeteer, a serial killer from the past, who lives with his victim's bodies before disposing of them; Brennan struggles with guilt over not stopping the killer earlier.

Booth and the lab team desperately search for Brennan after she's kidnapped by her former assistant, Zack Addy.

The team investigates whether an artificial intelligence bot was programmed to kill its creator; Bones plans a surprise for her birthday.

The team becomes enmeshed in retirement home drama when the body of an old man is found in an acid dump site; back at the lab, discussion of marriage and kids dominates the conversation.

The team investigates the death of a person from Booth and Brennan's past; Aubrey learns his dad is back in the picture.

When a tutor who works with privileged students turns up dead, the team sifts through possible murderers; Bones wants to voice her own audiobook.

The investigation into the murder of a golfer-turned-lumberjack reveals numerous secrets that could have led to the victim's demise, including an affair with a married rival.

Corpses that are linked to Booth's former Army unit turn up around D.C.; Brennan's father hides a serious medical procedure from her.

A recent loss creates tension between Booth and Brennan as they each try to deal with their grief; an old flame from Brennan's past visits.

Booth, Brennan and Aubrey go under cover at a rowdy demolition derby to investigate the case of a young man who died in a horrendous hay baler accident; Dr. Gordon Wyatt returns and assists Hodgins and Cam when the Gormogon case hits a dead end.

The burning body of an aspiring writer and director crash-lands onto a passing car; Bones seeks guidance on the meaning of passion in the workplace; Booth allows Aubrey to take the reins on their current case.

Brennan testifies for Zach; Angela reveals some big news; Aubrey and Jessica come to terms about their future; when the team learns Kovac has escaped, Booth rushes to protect those he loves.

After Brennan experiences a setback, the rest of the team must continue the hunt for Kovac without her, putting everything she has ever taught them to the test.

Skeletal remains found at the bottom of a lake turn out to be those of a congressman's former aide.

When Dr. Brennan uncovers the identity of a man killed while driving a car registered to a prominent Middle Eastern man with ties to the U.S. government, she and Booth find themselves tracking a terrorist.

Pride starts to doubt evidence suggesting homeless kids murdered a petty officer.

Rita Deveraux tells Pride that Douglas Hamilton is about to make a deal to get out of prison; Pride and the team re-investigate the Clearwater case in hopes of spoiling his plans.

After a deadly armed robbery and high-speed chase is linked to an undercover ATF operation, Percy reconnects with her former ATF partner.

Sebastian's high school friend asks for help when her business partner is killed at a gaming convention; FBI Special Agent Raymond Isler believes Adrian is the hacker that the Cyber Crimes division has been tracking for years.

A petty officer's murder leads the team to a night club where Pride's mother used to perform; Lasalle must return home to Alabama after receiving an unexpected call from his family.

A petty officer is murdered while in town to help a refugee family; Wade works on the special election campaign for Mayor Zahra Taylor that takes place during Mardi Gras.

FBI Special Agent Raymond Isler asks Pride for help with an off-the-books opioids theft investigation he is personally invested in; Percy works under cover as a getaway driver, with Isler as the muscle for a job tied to the case.

A congressional aide disappears after a hit man saves her from two men posing as NCIS agents; LaSalle struggles with life-altering decisions regarding his brother's future.

When a young girl's body is discovered 10 years after being kidnapped, the team searches for her abductors -- who have taken their next victim; Kono asks Catherine for a favor that could impact her relationship with Adam.

McGarrett helps his mother with a covert op in hope of retrieving an incriminating microfiche; Kono runs into danger as she closes in on Adam's secret.

Kono is blamed for a murder she did not commit; McGarrett's visit to Wo Fat leads to a shocking discovery.

Following McGarrett and Wo Fat's escape, gunmen hit Five-0 headquarters; McGarrett must turn on his own in order to find Catherine.

As the Five-0 team members investigate a murder, they are led to a Texas ranger (Tim Daly) who came to Hawaii to look for his daughter; Adam and Kono fight to stay alive.

When a missing artifact seems to be the key to solving a double murder, a conspiracy theorist (Jorge Garcia) helps the team.

When a wedding crasher is murdered, a runaway bride is the prime suspect; Danny makes a decision about his relationship with Gabby.

A seemingly harmless surveillance job turns deadly; in hope of saving Kono, Adam considers making a sacrifice.

When a zombielike man is shot, the team members are led to a madman who is performing experiments on humans.

When Mary gets sick, McGarrett and the team must watch her newly adopted baby while they investigate the murder of an undercover ATF agent.

The governor asks McGarrett and Grover to serve a warrant to a young computer hacker (Nick Jonas) in order to protect national security.

A secret service agent is murdered while the president is traveling to Oahu; as Thanksgiving approaches, McGarrett's Aunt Deb (Carol Burnett) visits and shares a stunning secret.

An attempted murder leads the team to investigate a deadly crime committed in Hawaii during World War II.

An investigation involving a potential serial killer puts Chin's life in danger; Grace and Danny find a mysterious puzzle box.

One of Grover's friends disappears after apparently committing a murder.

Chin is questioned about his father's murder and how his relationship with Malia and her family could have adversely affected the investigation.

The team tries to help Ralph when he is taken by the FBI for questioning after his web game play unintentionally reveals a CIA safe house's location.

The team searches for a CIA mole who has been coerced into stealing deadly chemicals; Paige shows Walter how to flirt.

The team must help an injured former Secret Service agent regain his memory in order to stop the launching of weapons of mass destruction.

The team members go under cover on a cruise ship in order to locate and disable stolen rockets; as Valentine's Day approaches, Ralph develops a crush.

A retired SEAL -- who tracked people impersonating military personnel -- is murdered; Brody finds that LaSalle is uncharacteristically unenthusiastic about Christmas.

The investigation into an explosion at the Navy-Marine Corp Relief Gala reveals Pride was the bomb's target.

The NCIS team and the Coast Guard Investigative Service work together when a Navy Admiral's daughter is the prime suspect in a double murder on a research boat; Lasalle looks for his estranged brother.

After learning he was poisoned with a deadly dose of radiation, a Navy lieutenant commander asks Pride and the team to solve his imminent murder.

An agent is killed while working on a security detail for the Vice Chief of Naval Operations; Brody's past is evaluated.

A petty officer is murdered during Mardi Gras festivities; Pride contemplates what to tell his daughter about his strained relationship with his father.

The NCIS team tries to narrow down the motive when a Navy recruiter is murdered in a hit-and-run; Lasalle worries about his brother.

Pride believes Baitfish has returned and has the NCIS team chase down leads in an attempt to locate him.

When a sailor is killed in a strip club, the murder weapon turns out to be linked to other unsolved cases; Brody receives a visit from her ex-fiance.

During the autopsy of a petty officer who seems to have died of natural causes, an armed man holds Wade, Sebastian and Danny hostage in the morgue.

When a Navy commander's car is stolen with his baby inside, the team must determine if it was a targeted abduction.

Lasalle's brother, Cade, needs the team's help when he becomes a murder suspect -- and cannot remember what happened; Lasalle is determined to prove Cade's innocence, despite the wealth of evidence against him.

Baitfish murders a person close to the team in order to send a message to Pride; a citywide hunt for the elusive criminal takes place.

Pride has suspicions about a mole; new intelligence comes to light that indicates a breach at the ports.

Pride and the team must go on a dangerous undercover mission to retrieve a stolen missile and prevent an attack.

A blogger dedicated to exposing government corruption is murdered; during the investigation, it is revealed that a war crime may have occurred during a humanitarian effort in Bolivia.

When a highly regarded Navy pilot is killed after crashing a new, high-tech jet at an air show, the team must determine if it was human or mechanical error.

The NCIS team investigates when a Navy drone pilot is murdered after using a black market drone to obtain military surveillance.

When an Australian Royal Navy Lieutenant is murdered in New Orleans, Special Agent Naomi Parsons (Kate Beahan) is sent to work with Special Agent Pride.

When a petty officer is found dead, the team's participation in the annual Red Dress Run comes to a halt.

The members of the team travel to Mexico when the daughter of a tech billionaire is abducted; Walter participates in an interview that leads to hurt feelings.

The team must facilitate peace discussions when a conflict in Eastern Europe threatens to escalate into World War III.

As the members of team Scorpion try to save lost hikers, their helicopter crashes, igniting a large wildfire and injuring the pilot.

The team protects a witness who is on her way to testify against a dangerous drug cartel -- while the cartel is in hot pursuit.

The murder of a bride on her wedding day leads the team to a strip club.

Horatio's past comes back to haunt him when Julia has him arrested for murder.

Horatio deals with his past; the team races to save Calleigh from kidnappers.

The team springs into action to stop a vigilante who is hunting down and killing Internet predators.

A body in a sinkhole leads the team to a robbery; the target of the robbery has a shocking secret.

The investigation into a plane crash reveals the customs agent on board was dead before takeoff; Danny cares for an orphaned dog.

The physically altered corpse of an unidentified man is found in the trunk of a stolen car; Danno crashes on McGarrett's couch.

McGarrett travels to North Korea with Jenna Kaye to deliver ransom to rebels holding her fiance hostage; the team investigates the murder of an investigative reporter who appears to have connections to Jenna.

McGarrett and the team search for a missing bus full of school children and those responsible for the crime.

On the night before Chin Ho's wedding, the team's investigation into a man left to die in an abandoned bunker intersects with Capt. Fryer's case.

When a teenager is murdered, the team must determine why she was targeted and if the person responsible was a hired professional.

Chin Ho shares news about Joe White that rocks McGarrett to his core; Danny is forced to play midwife when his ex goes into early labor.

When Danno and his family are targeted by a vengeful dirty cop from Danno's past, the team steps in to help.

When the team almost causes an international incident, Lt. Gov. Denning decides that one of them should be fired; Chin Ho faces the harrowing task of choosing a Valentine's Day gift for Malia.

The team investigates when a man dressed as a Hawaiian NaKoa warrior is found dead near the site of a war re-enactment.

The team crosses paths with a retired NYPD bomb expert while investigating the death of a famous talk-radio host.

When McGarrett's sister is arrested for smuggling diamonds, he enlists the help of an ex-con to set up a sting.

Max reveals shocking information about his childhood to help the team track a serial killer who may have ties to Max's past.

When a suspect threatens to release a deadly virus, the Five-0 teams up with Special Agents G. Callen (Chris O'Donnell) and Sam Hanna (LL Cool J).

When McGarrett finally gets to Wo Fat, he is stunned to learn that the Japanese Yakuza wants them both dead.

When Mac and the team are unable to prevent sensitive intel from falling into Codex's hands, Mac must scale a vertical cliff using only gear he can cobble together himself to prevent the info's transmission.

While on a mission to hunt down a Codex lead, Mac and the team discover Murdoc hacked their comms and has recorded them for months.

Mac and Riley head overseas together to prevent a governmental collapse and inadvertently inhale new, deadly microscopic technology.

Mac, Desi and Russ go under cover during a royal Indian wedding to protect a princess whose policies could put her life in danger; Bozer suspects Riley is up to her old hacking ways.

Mac and the team delve into the world of Italian car culture to track down a crime boss; Mac must lean on Desi when he discovers that he's losing the ability to control his hands; Mac and Desi move in together.

Mac and Desi travel with Bozer to his childhood home when his aunt dies in a tragic accident; they soon discover she may have been murdered for trying to expose the city's contaminated water supply.

Mac and Riley go missing and wake up 24 hours later in a cornfield with no memory of how they got there; they must unravel the mystery and find out how to get rid of the nanotrackers in their bodies, no matter the cost.

Special agents for the Department of External Services, Angus "Mac" MacGyver and Jack Dalton, work to recover a missing bioweapon.

The BAU investigates four murders along the eastern seaboard; the crimes become personal for Alvez when the team discovers there are ties to his time spent in pursuit of a notorious hit man; Alvez and his girlfriend decide to move in together.

The BAU races to capture the vigilantes behind a series of attacks taking place every 27 minutes in the nation's capital; Prentiss and Unit Chief Andrew Mendoza lead the effort to identify the vigilantes and what's motivating them.

The BAU investigates a double homicide and kidnapping in New Hampshire; Rossi's plans to elevate his relationship with Krystall don't go as planned.

A professor from Lewis' past tips off the BAU to an alarming number of overdose deaths of patients who just completed rehab.

Prentiss faces her past when the BAU is sent to investigate the murders of prominent businessmen, all of whom are missing their hearts; Prentiss plans a romantic first date with Mendoza, but the evening is cut short by an urgent call from Rossi.

The BAU team heads to Portland, Ore., to investigate a chilling abduction that may be linked to a local couple who were killed in their home a week earlier.

The BAU team flies to Iowa to investigate the disappearance of three 10-year-old children who appear to have been abducted from their homes, with surveillance video from a park as their only lead to finding the children's whereabouts.

Rossi questions his actions in the aftermath of a struggle with a serial killer who appears to have outsmarted the BAU.

The BAU investigates a string of murders taking place in supposedly haunted houses in Lewiston, Maine.

Rossi prepares to marry Krystall; the team investigates a series of fatal shootings following car accidents.

The BAU team investigates an unsub with striking similarities to Rossi's latest obsession, "The Chameleon."

The team searches for Everett Lynch and his daughter; Spencer has a meaningful visit with his mother.

The BAU team investigates a series of seemingly random fatal explosions throughout Kentucky and Tennessee.

The members of the BAU enjoy a Saturday off in vastly different ways; Rossi and Prentiss help Simmons assemble a new crib; Garcia leads a hacking competition; Dr. Reid strikes up a conversation with a woman named Maxine.

Following a series of fatal shootings, the BAU team travels to Illinois to investigate what appears to be a copycat serial killer.

After a father and daughter get kidnapped, a former foe of the BAU returns with very specific demands for Dr. Reid.

Horatio confronts a private investigator (Tom Sizemore) who is systematically destroying the team.

Horatio puts his life on the line when someone tries to take down the team.

In its effort to determine who shot Horatio Caine, the team discovers evidence that leads to some of the most-dangerous people in Miami and to one of its own.

A sadistic crime ring takes advantage of high gas prices when fuel becomes so pricey that citizens of Miami begin killing for it.

When Delko's therapist's daughter is murdered, Horatio and the team race to find the killer before Delko's secrets are exposed.

Horatio and the team face the Russian mob after a savage double murder in the Everglades.

While investigating a murder in a boutique, Horatio learns that Julia's (Elizabeth Berkley) instability has made her a danger to others.

A crane crashes into a Miami high rise, putting Delko and Calleigh in danger, and ruining Horatio's best hope of catching a notorious crime boss.

A man is found stabbed and handcuffed in a hotel room; a prank at the lab threatens an investigation and causes a rift in the team.

The team races the clock to find a baby kidnapped by a killer, to prevent the child from becoming the next victim.

Horatio steps in to prevent a police officer from getting too close to the case when a savage killer runs rampant in Miami.

Horatio looks into Delko's past when a shooter targets the motel where Delko is staying.

While en route to China to identify prehistoric anthropological remains, Booth and Brennan are called upon to solve a murder in midair when the flight attendant discovers a fully cooked human body in the plane's microwave.

Brennan and Booth investigate when a skull and other skeletal remains are found in a nationally protected wooded preserve; Brennan's recently acquitted father (Ryan O'Neal) finds a job as a teacher.

A shallow grave holds the remains of conjoined twins; Booth and Brennan infiltrate a circus community after they discover that the twins were jugglers there.

A man and his son discover a frozen body in a pond; Booth gets advice from one of his hockey idols.

Brennan and the team get a phone call from the Grave Digger, who informs them that Booth has been buried alive with only 24 hours of oxygen.