While decommissioning an old nuclear missile, an accident causes the team to endure exposure to toxic vapor while trying to prevent the nuke from detonating; Paige confronts Happy about constantly tagging along with her and Walter.

The new JAG boss dispatches Rabb and Austin to destroy an aircraft's top-secret software when a Navy fighter is forced down in Cuba.

After Meg is shot, a shadowy military operative helps Harm uncover a plot to kill the visiting Russian president.

When a U.S. senatorial candidate's staffer is run over and killed while crossing the street, the team must determine if it was an accident or a murder than could put others in danger.

Mothers of murdered men, is a club no one wants to belong to; what's harder is knowing the killers are still at large and there isn't enough evidence for police to make arrests.

In the late 1970s, a series of mysterious deaths occur; two junior-high girls are found in an underpass west of Calgary; seven months later, another young woman is found in a ditch.

The police lack leads after single mom Laura Ackerson leaves for work one morning and never returns, so they turn to surveillance cameras to try to locate her and unearth sinister footage.

During a night of full-moon madness, Ray punches a hole in the interrogation room wall and finds a perfectly preserved corpse.

Fraser must find a flight attendant's killer before her RCMP father starts an international incident.

Michelle Mockbee arrives at work early in order to get ahead on payroll, and she is murdered outside her office less than an hour later; detectives follow the surveillance footage to a closet full of dirty secrets.

The police lack leads after single mom Laura Ackerson leaves for work one morning and never returns, so they turn to surveillance cameras to try to locate her and unearth sinister footage.

Harm pursues a mentally unbalanced and potentially deadly Marine sniper who has gone AWOL after receiving orders to Bosnia.

While investigating the death of a Navy pilot in Special Operations training, Harm uncovers a corrupt general's plans for a Colombian drug raid.

Meticulous attorney Margaret Wright hires her scruffy son as her law firm's in-house investigator.

Hours after calling Gibbs about a possible case, a Marine is found dead in Quantico; McGee and Bishop pose as a married couple.

While attending a tech convention, Team Scorpion is taken hostage by a group attempting a virtual heist.

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

Harm pursues a mentally unbalanced and potentially deadly Marine sniper who has gone AWOL after receiving orders to Bosnia.

While investigating the death of a Navy pilot in Special Operations training, Harm uncovers a corrupt general's plans for a Colombian drug raid.

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

While attending a tech convention, Team Scorpion is taken hostage by a group attempting a virtual heist.

Meticulous attorney Margaret Wright hires her scruffy son as her law firm's in-house investigator.

After a Navy commander is murdered on a beach, the team watches for a nude female sunbather who may be the only witness.

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

While attending a tech convention, Team Scorpion is taken hostage by a group attempting a virtual heist.

Harm pursues a mentally unbalanced and potentially deadly Marine sniper who has gone AWOL after receiving orders to Bosnia.

While investigating the death of a Navy pilot in Special Operations training, Harm uncovers a corrupt general's plans for a Colombian drug raid.

A CIA agent who once worked with Sam seeks his help before dying of an apparent suicide; while working under cover, Deeks and Kensi enter a prized poodle in a dog show.

In November 1999, 16-year-old Julie Surprenant disappears without a trace; she is last seen at a bus stop just meters from her back door in the Montreal suburb of Terrebonne, but somehow never makes it home.

Just days away from a family Easter dinner in 2019, a young single mom and her 22-month-old daughter disappear; days pass and their loved ones grow concerned and contact the police; investigators say all footprints of life have come to a sudden end.

On July 5, 2011, a young couple on their way home from a night of birthday celebrations is shot while getting gas; with the killers long since vanished, detectives must rely on the grainy gas station video to unravel a senseless act of evil.

After Kowalski is framed for the murder of a crime boss, Fraser places him under arrest at the Canadian consulate.

The case of a murdered sailor, $100 million in gold bullion and a ghost ship in the Great Lakes Triangle tests feuding Fraser and Kowalski.

In Alexandria, Va., Nancy Dunning, Ronald Kirby and Ruthanne Lodato are all fatally shot in broad daylight by a gunman knocking at the front door; detectives attempt to use security footage to track down the killer before they strike again.

On July 5, 2011, a young couple on their way home from a night of birthday celebrations is shot while getting gas; with the killers long since vanished, detectives must rely on the grainy gas station video to unravel a senseless act of evil.

Harm and Meg have a courtroom showdown over child custody when Harm represents an AWOL Marine who disappears with his young son.

Rabb and Austin search for a saboteur after an astronaut in training for a top-secret space shuttle mission is killed.

Margaret and Todd work two seemingly unrelated cases, only to discover a key piece of information in the details of Todd's humorously boring civil case could help Margaret's high-profile client.

Vance returns to field duty - with Gibbs as his partner - when a murder investigation has a connection to a former NCIS agent incarcerated for stealing evidence.

At Halloween, the team takes on a case to prove the existence of ghosts on the Queen Mary but find a ship on a deadly collision course; Walter considers taking note of Paige's interests to benefit their relationship.

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

Harm and Meg have a courtroom showdown over child custody when Harm represents an AWOL Marine who disappears with his young son.

Rabb and Austin search for a saboteur after an astronaut in training for a top-secret space shuttle mission is killed.

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

At Halloween, the team takes on a case to prove the existence of ghosts on the Queen Mary but find a ship on a deadly collision course; Walter considers taking note of Paige's interests to benefit their relationship.

Margaret and Todd work two seemingly unrelated cases, only to discover a key piece of information in the details of Todd's humorously boring civil case could help Margaret's high-profile client.

Ducky and Abby help identify a Marine whose severed leg is found in a trash receptacle, then the case takes a turn when the man's identity does not match his official photo ID.

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

At Halloween, the team takes on a case to prove the existence of ghosts on the Queen Mary but find a ship on a deadly collision course; Walter considers taking note of Paige's interests to benefit their relationship.

Harm and Meg have a courtroom showdown over child custody when Harm represents an AWOL Marine who disappears with his young son.

Rabb and Austin search for a saboteur after an astronaut in training for a top-secret space shuttle mission is killed.

A CIA agent's death leads the team to a group of dangerous Russian agents; Hanna worries a secret will be exposed.

Looking into some of Canada's most infamous criminal cases with extensive archives and intimate family interviews and exploring the lasting impacts on the community and justice system.

Looking into some of Canada's most infamous criminal cases with extensive archives and intimate family interviews and exploring the lasting impacts on the community and justice system.

On March 27, 2015, Tierra Hall hugs her mother goodbye for the last time; 24 hours later, the teenager's dead body is discovered outside an abandoned house.

The case of a murdered sailor, $100 million in gold bullion and a ghost ship in the Great Lakes Triangle tests feuding Fraser and Kowalski.

Ray and Kowalski help a small-town sheriff when the town's baseball team becomes a target of sabotage attempts.

In 2019, after a night out with friends, college student Samantha Josephson climbs into a car she mistakes for her rideshare, never to be seen alive again; with little to go on, police must rely on CCTV footage to help pick up the killer's trail.

On March 27, 2015, Tierra Hall hugs her mother goodbye for the last time; 24 hours later, the teenager's dead body is discovered outside an abandoned house.

Communist Chinese kidnap Rabb when he goes to Hong Kong; Rabb thinks a fellow prisoner may be his MIA father.

A sabotaged computer causes a Navy destroyer to enter North Korean waters during Rabb's murder investigation aboard the ship.

When Todd reunites with a childhood friend with a checkered past, he convinces Margaret to represent him in a minor legal case.

During an investigation, Abby is trapped in a pharmaceutical lab when armed men enter the building and take hostages.

A device that can prevent a nuclear meltdown is tracked through the Los Angeles sewers; Walter learns to listen and not offer advice to Paige; the team meets their new neighbor.

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

Communist Chinese kidnap Rabb when he goes to Hong Kong; Rabb thinks a fellow prisoner may be his MIA father.

A sabotaged computer causes a Navy destroyer to enter North Korean waters during Rabb's murder investigation aboard the ship.

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

A device that can prevent a nuclear meltdown is tracked through the Los Angeles sewers; Walter learns to listen and not offer advice to Paige; the team meets their new neighbor.

When Todd reunites with a childhood friend with a checkered past, he convinces Margaret to represent him in a minor legal case.

A sniper kills Marine recruiters and leaves a white feather behind as his calling card.

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

A device that can prevent a nuclear meltdown is tracked through the Los Angeles sewers; Walter learns to listen and not offer advice to Paige; the team meets their new neighbor.

Communist Chinese kidnap Rabb when he goes to Hong Kong; Rabb thinks a fellow prisoner may be his MIA father.

A sabotaged computer causes a Navy destroyer to enter North Korean waters during Rabb's murder investigation aboard the ship.

The team investigates potential links among a dead naval tech scientist, a surfer and an Internet video; Kensi and Deeks go under cover as they pursue suspects.

Looking into some of Canada's most infamous criminal cases with extensive archives and intimate family interviews and exploring the lasting impacts on the community and justice system.

Crime reporter Nancy Hixt reviews the case of Meika Jordan, a six-year-old girl whose life was tragically cut short; Nancy reveals the details of this case and the evidence uncovered by investigators in their quest for justice.

In May 2019 in Cedar Rapids, Iowa, a shooter opens fire on four teenagers in a parked car then escapes with the help of a getaway driver.

Fraser must protect his friend from a criminal when the two men witness a jewelry heist.

When a pretzel vendor is gunned down in the park, Fraser investigates the crime, with surprising results.

In September 2014, an Iowa college town panics after police find Tong Shao, a missing student from China, murdered; when security camera footage points to a planned execution, hunting down the young woman's killer becomes an international mystery.

In May 2019 in Cedar Rapids, Iowa, a shooter opens fire on four teenagers in a parked car then escapes with the help of a getaway driver.

Mac (Catherine Bell) must stop Harm (David James Elliott) from seeking revenge against his former girlfriend's murderer.

Harm joins forces with Mac and Clayton Webb to recover the Declaration of Independence, which was stolen by a revered patriot.

Margaret and Todd work to bring justice to an Olympic athlete who lost his leg in a plane crash resulting from a defective aircraft.

When a petty officer is murdered, the crime matches a local serial killer's method of operation; Delilah and McGee prepare to move in together.

Team Scorpion visits a renaissance festival, but the revelry is cut short when a group tries to rob a nearby police evidence locker; Paige grows weary of Walter pointing out the historical inaccuracies at the festival.

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

Mac (Catherine Bell) must stop Harm (David James Elliott) from seeking revenge against his former girlfriend's murderer.

Harm joins forces with Mac and Clayton Webb to recover the Declaration of Independence, which was stolen by a revered patriot.

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

Team Scorpion visits a renaissance festival, but the revelry is cut short when a group tries to rob a nearby police evidence locker; Paige grows weary of Walter pointing out the historical inaccuracies at the festival.

Margaret and Todd work to bring justice to an Olympic athlete who lost his leg in a plane crash resulting from a defective aircraft.

With the help of a local sheriff, Gibbs and his team hunt down a possible serial killer targeting naval officers.

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

Team Scorpion visits a renaissance festival, but the revelry is cut short when a group tries to rob a nearby police evidence locker; Paige grows weary of Walter pointing out the historical inaccuracies at the festival.

Mac (Catherine Bell) must stop Harm (David James Elliott) from seeking revenge against his former girlfriend's murderer.

Harm joins forces with Mac and Clayton Webb to recover the Declaration of Independence, which was stolen by a revered patriot.

As the team investigates the murder of a wealthy, retired CIA agent, Hetty's knowledge of the case is questioned.

Dismembered remains belonging to a child are uncovered, and Alan Carter returns to the scene of the crime 20 years later, reuniting with the lead detective and a community coming together in grief.

After a year studying abroad, Lukas Strasser-Hird had dreams to be a doctor; he went out with friends to celebrate when he arrived home, but no one could have predicted how dangerous the situation was to become.

In 2009 in Tracy, Calif., a little girl vanishes after playing at a friend's house, leaving her family desperate for answers; with no leads and few clues, investigators must rely on surveillance footage to piece together the horrifying truth.

Fraser (Paul Gross) arrests a legendary poker player and becomes entangled in a federal investigation.

Kowalski and Fraser must investigate a policeman's homicide to save the victim's wife from getting the death penalty.

In the summer of 1994, a night out in Miami turns deadly for two young women and a popular nightclub owner; with little evidence found on the scene, investigators must rely on a hidden home video camera to help solve this mystery.

In 2009 in Tracy, Calif., a little girl vanishes after playing at a friend's house, leaving her family desperate for answers; with no leads and few clues, investigators must rely on surveillance footage to piece together the horrifying truth.

After escaping from prison, a private convicted of spying takes several JAG officers hostage and insists they retry him.

A woman with a secret life is faced with revealing her secret when she discovers that her brother-in-law is cheating on her sister; a woman has information about her sister's husband's untimely death.

After losing his job, a man secretly chooses a career to support the expensive lifestyle that he and his girlfriend have grown accustomed to; a brother discovers a disturbing truth about his identical twin that may jeopardize his entire family.

A commercial pilot and family man conceals a secret that could jeopardize his entire life; a marriage is tested when a surrogate takes on more duties than bearing the couple's child.

Pregnant best friends share something that could destroy their friendship forever; a man hides a dark secret behind his lavish life.

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

After escaping from prison, a private convicted of spying takes several JAG officers hostage and insists they retry him.

Harm investigates a rash of mysterious deaths sweeping one of the squadrons, which the pilots blame on a religious curse.

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

A woman with a secret life is faced with revealing her secret when she discovers that her brother-in-law is cheating on her sister; a woman has information about her sister's husband's untimely death.

After losing his job, a man secretly chooses a career to support the expensive lifestyle that he and his girlfriend have grown accustomed to; a brother discovers a disturbing truth about his identical twin that may jeopardize his entire family.

A commercial pilot and family man conceals a secret that could jeopardize his entire life; a marriage is tested when a surrogate takes on more duties than bearing the couple's child.

Pregnant best friends share something that could destroy their friendship forever; a man hides a dark secret behind his lavish life.

A woman with a secret life is faced with revealing her secret when she discovers that her brother-in-law is cheating on her sister; a woman has information about her sister's husband's untimely death.

After losing his job, a man secretly chooses a career to support the expensive lifestyle that he and his girlfriend have grown accustomed to; a brother discovers a disturbing truth about his identical twin that may jeopardize his entire family.

A commercial pilot and family man conceals a secret that could jeopardize his entire life; a marriage is tested when a surrogate takes on more duties than bearing the couple's child.

Pregnant best friends share something that could destroy their friendship forever; a man hides a dark secret behind his lavish life.

Coaxed from her home for a photoshoot, a promising young athlete never returns: Caryn Lieberman brings us through the DNA breakthrough that cracks the case to a mother's national safety campaign.

Alicia's disappearance leads to one of the largest missing person searches in Ontario's history; reporter Catherine McDonald reconnects with Alicia's mother to tell the tale.

In 2018, 59-year-old Pamela Hutchinson is found dead in her Florida condo; the search for answers leads police to a mysterious woman spotted on CCTV; when the suspect is linked to yet another murder, it sparks a nationwide manhunt and media frenzy.

After a voodoo priest dies, Fraser and Kowalski (Paul Gross, Callum Keith Rennie) investigate a secretive Haitian community.

Fraser sings backup for a Canadian country-western singer (Michelle Wright) who has received death threats.

Natasha Cournoyer, 37, disappears without a trace in Laval, Canada; as her friends and family struggle for answers, detectives must follow a stone-cold trail to uncover her final footsteps caught on surveillance cameras.

In 2018, 59-year-old Pamela Hutchinson is found dead in her Florida condo; the search for answers leads police to a mysterious woman spotted on CCTV; when the suspect is linked to yet another murder, it sparks a nationwide manhunt and media frenzy.

Harm and Mac face off at the trial of a Navy SEAL accused of murdering a buddy during an antiterrorist mission.

Recently released inmates reenter society and move in with people they barely know who are welcoming them into their homes.

After 18 years behind bars, Bill is finally released from prison and immediately hit with a long list of rules from devout Mark and Sharna; Artie picks up inmate Jovan, who disappears shortly after getting out; and more.

Shortly after Darquavion moves into Henry's house, he goes missing; Mark takes Bill for a driving lesson and learns about his pre-lockup getaway skills, and Sharna finds out that Bill has a girlfriend.

Sparks fly as Kyle and Sandra lay down the list of guidelines for released inmate Nick; meeting Tiffane, an online boutique owner, who's taking in Ari, a young woman finishing up her 4 1/2-year sentence for identity theft and bank fraud.

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

Harm and Mac face off at the trial of a Navy SEAL accused of murdering a buddy during an antiterrorist mission.

A female pilot (guest star Nancy Everhard) charges her commanding officer (guest star Terry O'Quinn) with sexual harassment after he orders her not to fly. With David James Elliott. Dee Wallace Stone also guest stars.

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

Recently released inmates reenter society and move in with people they barely know who are welcoming them into their homes.

After 18 years behind bars, Bill is finally released from prison and immediately hit with a long list of rules from devout Mark and Sharna; Artie picks up inmate Jovan, who disappears shortly after getting out; and more.

Shortly after Darquavion moves into Henry's house, he goes missing; Mark takes Bill for a driving lesson and learns about his pre-lockup getaway skills, and Sharna finds out that Bill has a girlfriend.

Sparks fly as Kyle and Sandra lay down the list of guidelines for released inmate Nick; meeting Tiffane, an online boutique owner, who's taking in Ari, a young woman finishing up her 4 1/2-year sentence for identity theft and bank fraud.

Recently released inmates reenter society and move in with people they barely know who are welcoming them into their homes.

After 18 years behind bars, Bill is finally released from prison and immediately hit with a long list of rules from devout Mark and Sharna; Artie picks up inmate Jovan, who disappears shortly after getting out; and more.

Shortly after Darquavion moves into Henry's house, he goes missing; Mark takes Bill for a driving lesson and learns about his pre-lockup getaway skills, and Sharna finds out that Bill has a girlfriend.

Sparks fly as Kyle and Sandra lay down the list of guidelines for released inmate Nick; meeting Tiffane, an online boutique owner, who's taking in Ari, a young woman finishing up her 4 1/2-year sentence for identity theft and bank fraud.

A small community in the Rocky Mountains is shattered when two people are found dead and a two-year old goes missing; Nancy Hixt recounts one of the most disturbing cases she's covered.

In May of 2007, 15 year old Jordan Manners was gunned down in a hallway, marking the first time a student was shot and killed inside a Toronto school and Catherine McDonald remembers the murder, its impact on the community and his family.

When a killer executes 19-year-old Abigail Gasca-Chavez in her own home, the only witnesses are her toddler and neighborhood surveillance cameras; detectives close in on a suspect, but when he heads for the Mexican border, it's a race against time.

Fraser and Ray arrest a mob boss who, in turn, threatens the Chicago Police Department with a harassment suit.

A murder-for-hire business has a unique body-disposal system.

In North Carolina, Stephanie Powell-Anderson's convenience store shift ends in bloodshed, as part of a larger pattern of violence plaguing the area; with the assailant growing bolder by the day, the heat is on to make an arrest before he kills again.

When a killer executes 19-year-old Abigail Gasca-Chavez in her own home, the only witnesses are her toddler and neighborhood surveillance cameras; detectives close in on a suspect, but when he heads for the Mexican border, it's a race against time.

Harm and Mac become caught in a game of revenge when they are sent to Belfast, Northern Ireland, to save the life of a Navy lieutenant's infant son.

An attempt on Adm. Chegwidden's life leads to the realization that all the members of his Navy SEAL squad have died under mysterious circumstances.

Margaret attempts to join an elite philanthropy club and must represent a former club employee accused of using the organization to smuggle drugs; Todd goes under cover as a waiter at the elite club to get information to help Margaret's case.

A murder forces Ducky to disclose his participation in a secret society devoted to solving cold cases.

Team Scorpion becomes stranded on a floating island of trash they were trying to destroy; Toby works with Cabe to uncover the details of his father's death.

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

Harm and Mac become caught in a game of revenge when they are sent to Belfast, Northern Ireland, to save the life of a Navy lieutenant's infant son.

An attempt on Adm. Chegwidden's life leads to the realization that all the members of his Navy SEAL squad have died under mysterious circumstances.

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

Team Scorpion becomes stranded on a floating island of trash they were trying to destroy; Toby works with Cabe to uncover the details of his father's death.

Margaret attempts to join an elite philanthropy club and must represent a former club employee accused of using the organization to smuggle drugs; Todd goes under cover as a waiter at the elite club to get information to help Margaret's case.

Gibbs puts it all on the line to help a former commanding officer who is running for his life from the government.

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

Team Scorpion becomes stranded on a floating island of trash they were trying to destroy; Toby works with Cabe to uncover the details of his father's death.

Harm and Mac become caught in a game of revenge when they are sent to Belfast, Northern Ireland, to save the life of a Navy lieutenant's infant son.

An attempt on Adm. Chegwidden's life leads to the realization that all the members of his Navy SEAL squad have died under mysterious circumstances.

Gunmen in costumes orchestrate a strange and brazen heist that could impact the U.S. economy; Granger insists on a partnership with a hesitant Kensi.

At 29 years old, Lisa Mitchell and her common-law husband, Allan, had two children and she juggled two jobs to try to make ends meet and then one day, she disappeared, leaving her common-law husband and two children behind.

Teenage sisters Marsha and Tamara Ottey were stabbed to death in August 1995; months later, Dimitrija Trajceski became the first TTC worker killed on the job; Caryn Lieberman shares the story of how these two families' lives became intertwined.

In Groton, Vermont, a young man with a developmental disability leaves work and is never seen again; with no leads in sight, investigators must rely on surveillance footage to piece together the truth behind Christopher Gray's disappearance.

Fraser and Ray investigate after witnessing men in a white limousine abduct a teen girl from a shopping mall.

A female Mountie, who comes to Chicago after two murder suspects, has a strange attraction for Fraser.

Detectives rely on surveillance footage at a hospital in Tyler, Texas, when patients mysteriously start dying in the intensive care unit.

In Groton, Vermont, a young man with a developmental disability leaves work and is never seen again; with no leads in sight, investigators must rely on surveillance footage to piece together the truth behind Christopher Gray's disappearance.

Forced to make an emergency landing in the Appalachian Mountains, Harm and Mac are pursued by hunters who have just murdered a game warden.

Harm is assigned to escort and protect a visiting Romanian princess when enemy elements from her native country want to assassinate her.

Margaret and Francey enlist the help of a popular true crime podcaster to help exonerate a client who is serving a life sentence; Todd solicits dating advice from his sister and Susan when sparks fly between him and Lea.

Insurgents in Sudan attack volunteer doctors - including the man married to DiNozzo's ex-girlfriend, Jeanne Benoit.

Team Scorpion tries to help a father and his daughter when their plane crashes nearby; Paige helps Walter navigate his feelings about Cabe's possible future in prison.

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

Forced to make an emergency landing in the Appalachian Mountains, Harm and Mac are pursued by hunters who have just murdered a game warden.

Harm is assigned to escort and protect a visiting Romanian princess when enemy elements from her native country want to assassinate her.

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

Team Scorpion tries to help a father and his daughter when their plane crashes nearby; Paige helps Walter navigate his feelings about Cabe's possible future in prison.

Margaret and Francey enlist the help of a popular true crime podcaster to help exonerate a client who is serving a life sentence; Todd solicits dating advice from his sister and Susan when sparks fly between him and Lea.

A gun-toting man emerges from a body bag in the autopsy lab to take Ducky, Gerald and Kate hostage. Rudolf Martin guest stars.

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

Team Scorpion tries to help a father and his daughter when their plane crashes nearby; Paige helps Walter navigate his feelings about Cabe's possible future in prison.

Forced to make an emergency landing in the Appalachian Mountains, Harm and Mac are pursued by hunters who have just murdered a game warden.

Harm is assigned to escort and protect a visiting Romanian princess when enemy elements from her native country want to assassinate her.

Sam, Callen, Deeks and Kensi spend Christmas on an aircraft carrier investigating an NCIS special agent's death; Eric and Nell celebrate the holidays at headquarters; Hetty goes on a trip.

Kimberlee hasn't been heard from since 2016; her partner says she left and abandoned the family and her parents accuse him of murder; Rumina Daya investigates this unsolved case that's testing the limits of international justice.

An accomplished dancer, an aspiring urban planner, two talented musicians, and a young man who was well on his way to becoming a humanitarian became victims of the biggest mass killing in Calgary's history.

In Texas, on Christmas Eve 2010, a woman gets a mysterious phone call at work and speeds home to find her 12-year-old son gone without a trace; investigators look at those closest to the boy, but only surveillance footage can lead them to the truth.

Ice-fisherman Fraser catches a corpse, finds another, and gets chased by bad guys with grenade launchers.

Fraser and Kowalski pursue an arms dealer to the Yukon, where they join forces with Buck Frobisher's (Leslie Nielsen) detachment.

In a Calgary pub in 2010, 36-year-old barman Dexter Bain is brutally slain during a failed robbery; detectives use surveillance footage from a nearby store to find the suspect and stage a filmed sting operation to prove who pulled the trigger.

In Texas, on Christmas Eve 2010, a woman gets a mysterious phone call at work and speeds home to find her 12-year-old son gone without a trace; investigators look at those closest to the boy, but only surveillance footage can lead them to the truth.

Harm and Bud face a drug lord who seems to hold the upper hand when an unauthorized U.S.-Colombian mission goes wrong, supposedly resulting in the death of a Marine.

Harm goes under cover to help Mac investigate a Marine captain who risks the lives of his men in training exercises as preparation for real combat.

When Margaret is disappointed that no one but Todd can attend her family Thanksgiving dinner, Todd tries to convince his brother to come home; Margaret's family inadvertently helps her crack a case involving an injured bank teller and robbery.

A petty officer hoping to prove his innocence volunteers to be court martialed by NCIS if the team investigates his case; Jake and Bishop talk about their marital issues.

The team anxiously awaits the verdict of Cabe's trial which could send him to prison; they use their nervous energy to try saving a dog stuck in a cistern.

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

Harm and Bud face a drug lord who seems to hold the upper hand when an unauthorized U.S.-Colombian mission goes wrong, supposedly resulting in the death of a Marine.

Harm goes under cover to help Mac investigate a Marine captain who risks the lives of his men in training exercises as preparation for real combat.

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

The team anxiously awaits the verdict of Cabe's trial which could send him to prison; they use their nervous energy to try saving a dog stuck in a cistern.

When Margaret is disappointed that no one but Todd can attend her family Thanksgiving dinner, Todd tries to convince his brother to come home; Margaret's family inadvertently helps her crack a case involving an injured bank teller and robbery.

Gibbs, still recovering from his gunshot wound, pushes the team to investigate the body of a bludgeoned sailor, found at an illegal nightclub.

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

The team anxiously awaits the verdict of Cabe's trial which could send him to prison; they use their nervous energy to try saving a dog stuck in a cistern.

Harm and Bud face a drug lord who seems to hold the upper hand when an unauthorized U.S.-Colombian mission goes wrong, supposedly resulting in the death of a Marine.

Harm goes under cover to help Mac investigate a Marine captain who risks the lives of his men in training exercises as preparation for real combat.

One of Deeks' former defendants is targeted for uncovering information that could dismantle a car shipping operation with ties to a global terrorist ring.

What started out as a party to mark the end of classes at the University of Calgary ended in a horrific tragedy; to add to the complexity of the case, investigators quickly learned the suspect was the son of one of their own.

In 1981, Kelly Cook took a job to babysit for someone named Bill Christensen; the 15-year old girl was never seen alive again; featuring an exclusive interview with the original target of Bill Christensen.

In 2016, father Craig Rideout is reported missing after a strange home intrusion; within hours, police find a body matching Craig's description fifty miles away; using surveillance footage and forensics, detectives unravel an unbelievable plot.

Fraser gets temporary custody of a 12-year-old purse snatcher who is connected to the armed robbery he and Ray are investigating.

Fraser and Ray investigate an insurance scam involving professional boxing while a wolf cruises Chicago looking for a good time.

An escaped inmate murders Debra Johnson, a highly respected Correctional Administrator, at her home outside the prison; with the public at risk, police scour through surveillance footage for clues to hunt him down before he strikes again.

In 2016, father Craig Rideout is reported missing after a strange home intrusion; within hours, police find a body matching Craig's description fifty miles away; using surveillance footage and forensics, detectives unravel an unbelievable plot.

Harm and Mac defend a former Navy SEAL accused of using excessive force in the killing of three men robbing a convenience store.

Although hobbled by a knee injury, Harm must take on Islamic terrorists who have taken over a hospital to seize an Israeli diplomat.

When Lyle's niece is accused of committing a crime on her college campus, Lyle enlists Margaret and Todd to vindicate her.

A sailor who lost two siblings - Marines who were killed in the line of duty - needs a bone marrow transplant; Bishop returns to Oklahoma for Thanksgiving.

On Christmas Eve, Walter becomes unconscious after falling down the stairs and enters a dream world where Team Scorpion never existed.

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