After failing a military training mission, the team members are determined to prove themselves when an Internet infrastructure is threatened by a bomber.

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.

Following a murder, the secrets to classified software are thought to be lost until NCIS uncovers a suspect from Vance's past.

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.

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.

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.

Fraser returns from vacation to a blazing apartment and a new partner, Stanley Ray Kowalski.

Fraser helps Kowalski confront a demon from his past; Internal Affairs investigates the detective division.

In 2017, a neighbor finds the body of 40-year-old Dawn Meade outside an apartment complex in Louisa, Va.; detectives must determine if this is an accidental death or something more sinister, so they turn to surveillance footage to uncover the truth.

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.

Ukrainian Correspondent Nadia Petryk compares Cowboys and Cossacks.

Harm and Mac face off both in and out of the courtroom when Mac is forced to defend an admitted wife-beater now being prosecuted for murder.

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

When a murder investigation leads the team to Gibbs' hometown, secrets about his past are revealed.

The members of the team disregard Cabe's advice and go to Las Vegas for a casino job; a robbery leads to Walter being arrested.

The team finds a rape victim clinging to life after being beaten, and Horatio suspects an imprisoned rapist is somehow responsible for the attack.

Ukrainian Correspondent Nadia Petryk compares Cowboys and Cossacks.

Harm and Mac face off both in and out of the courtroom when Mac is forced to defend an admitted wife-beater now being prosecuted for murder.

The team finds a rape victim clinging to life after being beaten, and Horatio suspects an imprisoned rapist is somehow responsible for the attack.

The members of the team disregard Cabe's advice and go to Las Vegas for a casino job; a robbery leads to Walter being arrested.

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

When a Marine's body surfaces halfway around the world, the investigation forces Ziva to dig up a lost chapter of her life.

The team finds a rape victim clinging to life after being beaten, and Horatio suspects an imprisoned rapist is somehow responsible for the attack.

The members of the team disregard Cabe's advice and go to Las Vegas for a casino job; a robbery leads to Walter being arrested.

Ukrainian Correspondent Nadia Petryk compares Cowboys and Cossacks.

Harm and Mac face off both in and out of the courtroom when Mac is forced to defend an admitted wife-beater now being prosecuted for murder.

The team is assigned to track down a missing unmanned aerial vehicle (UAV) after it is compromised during a training exercise, killing a Marine before it disappears.

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.

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.

On April 3rd, 2017, Assistant Chief Deputy Clint Greenwood is shot dead at point blank range at the Harris County Courthouse outside Houston, Texas; no eye witnesses, but maybe security cameras lead them to Clint's killer.

Fraser and Kowalski try to thank a man for saving a boy's life and inadvertently reveal his identity as a federal witness.

Fraser and Kowalski protect Kowalski's ex-wife and her new boyfriend, a politician who has been receiving death threats.

Shirley Shell is a loving wife and the dedicated mother of three children and two grandchildren, but in 2007, Shirley is found brutally murdered at home in Edmond, Okla.

On April 3rd, 2017, Assistant Chief Deputy Clint Greenwood is shot dead at point blank range at the Harris County Courthouse outside Houston, Texas; no eye witnesses, but maybe security cameras lead them to Clint's killer.

A decommissioned aircraft carrier has a skeleton aboard, along with evidence that Harm's MIA father may be alive in Russia.

A fighter pilot facing charges of adultery lies to Harm, shooting a hole in his defense and shocking her most staunch advocate.

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.

When a Marine known for his love of practical jokes is found dead on Halloween, the team is called in to investigate; they soon learn that his jokes may have been the reason why he was killed.

Walter and the team ask a troubled former associate for help when a nuclear reactor in Los Angeles is on the verge of a cataclysmic meltdown.

A masked gunman opens fire at a bar, leaving its two owners dead and a third man wounded. Jay Mohr and John Heard guest star.

A decommissioned aircraft carrier has a skeleton aboard, along with evidence that Harm's MIA father may be alive in Russia.

A fighter pilot facing charges of adultery lies to Harm, shooting a hole in his defense and shocking her most staunch advocate.

A masked gunman opens fire at a bar, leaving its two owners dead and a third man wounded. Jay Mohr and John Heard guest star.

Walter and the team ask a troubled former associate for help when a nuclear reactor in Los Angeles is on the verge of a cataclysmic meltdown.

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.

Gibbs' hunt for the killer of a marine puts him on a collision course with an old friend.

A masked gunman opens fire at a bar, leaving its two owners dead and a third man wounded. Jay Mohr and John Heard guest star.

Walter and the team ask a troubled former associate for help when a nuclear reactor in Los Angeles is on the verge of a cataclysmic meltdown.

A decommissioned aircraft carrier has a skeleton aboard, along with evidence that Harm's MIA father may be alive in Russia.

A fighter pilot facing charges of adultery lies to Harm, shooting a hole in his defense and shocking her most staunch advocate.

When an Iraqi businessman is murdered, the team searches for the former Marine who was hired to protect him.

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.

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.

Josh Richards is shot execution style in the middle of a nightclub in Appleton, Wis.; when detectives delve deeper into the investigation, they discover a camera has the potential to reveal the identity of a killer.

Kowalski and Fraser begin an investigation that reveals the dark side of boxing after one of Kowalski's students injures someone in the ring.

While the police force is on strike, Fraser and Kowalski help a bounty hunter find a bail jumper from Montana.

A 24-year-old Yale Ph.D. student named Annie Le goes missing; CCTV shows Annie arrive at Yale, but she is not seen leaving; police search every inch of the building, until they find something horrific.

Josh Richards is shot execution style in the middle of a nightclub in Appleton, Wis.; when detectives delve deeper into the investigation, they discover a camera has the potential to reveal the identity of a killer.

Harm and Mac must prosecute a Marine colonel who defied orders in order to rescue his men from a Haitian warlord.

Joe Francis seizes an opportunity to build a new kind of porn company; it quickly becomes a runaway hit and makes Francis a celebrity, but behind the success are questionable business practices and lasting impacts for the women involved.

Legal troubles mount as shocking testimonies from underage girls land Francis in the crosshairs of Panama City Beach authorities, but Francis is adamant that he is the actual victim.

Despite mounting legal issues and a new threat from free internet porn, Francis and his empire seem unstoppable, even as his own increasingly unhinged and violent behavior threatens its growth.

The CSI team investigates when three people are found dead after a hurricane strikes Miami; Calleigh finds a woman shot to death in a house that was recently looted.

Harm and Mac must prosecute a Marine colonel who defied orders in order to rescue his men from a Haitian warlord.

Harm must choose between duty and loyalty when he learns that his mentor has been falsifying medical records to remain a Navy pilot.

The CSI team investigates when three people are found dead after a hurricane strikes Miami; Calleigh finds a woman shot to death in a house that was recently looted.

Joe Francis seizes an opportunity to build a new kind of porn company; it quickly becomes a runaway hit and makes Francis a celebrity, but behind the success are questionable business practices and lasting impacts for the women involved.

Legal troubles mount as shocking testimonies from underage girls land Francis in the crosshairs of Panama City Beach authorities, but Francis is adamant that he is the actual victim.

Despite mounting legal issues and a new threat from free internet porn, Francis and his empire seem unstoppable, even as his own increasingly unhinged and violent behavior threatens its growth.

Joe Francis seizes an opportunity to build a new kind of porn company; it quickly becomes a runaway hit and makes Francis a celebrity, but behind the success are questionable business practices and lasting impacts for the women involved.

Legal troubles mount as shocking testimonies from underage girls land Francis in the crosshairs of Panama City Beach authorities, but Francis is adamant that he is the actual victim.

Despite mounting legal issues and a new threat from free internet porn, Francis and his empire seem unstoppable, even as his own increasingly unhinged and violent behavior threatens its growth.

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.

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.

In June 2016, Larry Weaver decides to spend the night in Sikeston, Mo., while on his way home to his wife; there's no sign of him or his bike the next day, but security cameras could help the police.

Kowalski, Welsh and Thatcher (Callum Keith Rennie, Beau Starr, Camilla Scott) all witness a murder at the mall, but can't agree on who did it.

When Fraser's friend intercepts a secret message, Fraser and Kowalski become entrapped in a deadly arms transaction.

A family's worst nightmare begins when 23-year-old Christina Morris goes missing while out with friends in Plano, Texas; police franticly search to find her alive, but it's the discovery of surveillance camera footage that reveals the shocking truth.

In June 2016, Larry Weaver decides to spend the night in Sikeston, Mo., while on his way home to his wife; there's no sign of him or his bike the next day, but security cameras could help the police.

A Vietnam veteran with disabilities faces murder charges and weaves a complex tale of a crime that began more than 30 years ago in a POW camp.

LAPD ground units work with helicopter officers to catch an alleged multiple-hit-and-run suspect; deputies and police in Florida chase an alleged murder suspect; deputies in New Mexico pursue a naked woman driving recklessly on the highway.

Officers in Florida pursue a man who stole two police cars in the same day; deputies engage in a foot chase with an alleged cop killer; police respond to a report of a man attacked with a machete.

A man wanted for robbery and carjacking leads sheriff's deputies on a chase through crowded city streets; police get in a foot chase with an attempted murder suspect; a late-night, 145-mile-an-hour highway pursuit; and more.

The pursuit of a convicted felon ends with a head-on collision with a police cruiser; a shoplifting suspect shoots at police and then sets his own house on fire during a standoff; air and ground units coordinate during a high-speed chase.

A gas man is engulfed in invisible flames and dies during a qualifying race at the Grand Prix Americas.

A Vietnam veteran with disabilities faces murder charges and weaves a complex tale of a crime that began more than 30 years ago in a POW camp.

An investigation into the disappearance of a Navy plane leads Harm, Mac and Bud to consider several unusual possibilities until they uncover a terrorist plot.

A gas man is engulfed in invisible flames and dies during a qualifying race at the Grand Prix Americas.

LAPD ground units work with helicopter officers to catch an alleged multiple-hit-and-run suspect; deputies and police in Florida chase an alleged murder suspect; deputies in New Mexico pursue a naked woman driving recklessly on the highway.

Officers in Florida pursue a man who stole two police cars in the same day; deputies engage in a foot chase with an alleged cop killer; police respond to a report of a man attacked with a machete.

A man wanted for robbery and carjacking leads sheriff's deputies on a chase through crowded city streets; police get in a foot chase with an attempted murder suspect; a late-night, 145-mile-an-hour highway pursuit; and more.

The pursuit of a convicted felon ends with a head-on collision with a police cruiser; a shoplifting suspect shoots at police and then sets his own house on fire during a standoff; air and ground units coordinate during a high-speed chase.

LAPD ground units work with helicopter officers to catch an alleged multiple-hit-and-run suspect; deputies and police in Florida chase an alleged murder suspect; deputies in New Mexico pursue a naked woman driving recklessly on the highway.

Officers in Florida pursue a man who stole two police cars in the same day; deputies engage in a foot chase with an alleged cop killer; police respond to a report of a man attacked with a machete.

A man wanted for robbery and carjacking leads sheriff's deputies on a chase through crowded city streets; police get in a foot chase with an attempted murder suspect; a late-night, 145-mile-an-hour highway pursuit; and more.

The pursuit of a convicted felon ends with a head-on collision with a police cruiser; a shoplifting suspect shoots at police and then sets his own house on fire during a standoff; air and ground units coordinate during a high-speed chase.

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.

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 2017, Chinese exchange student Yingying Zhang mysteriously vanishes from the University of Illinois campus; police and the FBI turn to surveillance footage to uncover the shocking and sinister reality.

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.

Young professional Sasha Samsudean disappears after a night out in downtown Orlando, Fla.; detectives turn to video surveillance footage to unravel the mystery and bring Sasha's killer to justice.

In 2017, Chinese exchange student Yingying Zhang mysteriously vanishes from the University of Illinois campus; police and the FBI turn to surveillance footage to uncover the shocking and sinister reality.

Harm, Mac and Bud believe that an apparent bungling by the Navy in the downing of a North Korean airliner was a plot to make the United States look bad.

When Harm, Mac and Bud investigate a Medal of Honor candidate, they find a man very different from his public persona.

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.

A murderous psychopath taunts the team by leaving clues to the next victim's identity during the week of Halloween.

After being accused of destroying a priceless piece of art, the team must pass a mandated psych evaluation; Paige asks the team for help when Ralph is hesitant to go to the school Halloween party.

Horatio must find his brother's killer and protect a niece he never knew existed; the team explores voyeuristic Internet sites in connection with a stockbroker's murder.

Harm, Mac and Bud believe that an apparent bungling by the Navy in the downing of a North Korean airliner was a plot to make the United States look bad.

When Harm, Mac and Bud investigate a Medal of Honor candidate, they find a man very different from his public persona.

Horatio must find his brother's killer and protect a niece he never knew existed; the team explores voyeuristic Internet sites in connection with a stockbroker's murder.

After being accused of destroying a priceless piece of art, the team must pass a mandated psych evaluation; Paige asks the team for help when Ralph is hesitant to go to the school Halloween party.

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.

Two mercenaries are found dead on Gibbs' boat; Gibbs must consider his former mentor in a new light.

Horatio must find his brother's killer and protect a niece he never knew existed; the team explores voyeuristic Internet sites in connection with a stockbroker's murder.

After being accused of destroying a priceless piece of art, the team must pass a mandated psych evaluation; Paige asks the team for help when Ralph is hesitant to go to the school Halloween party.

Harm, Mac and Bud believe that an apparent bungling by the Navy in the downing of a North Korean airliner was a plot to make the United States look bad.

When Harm, Mac and Bud investigate a Medal of Honor candidate, they find a man very different from his public persona.

The NCIS team must find a motive when they discover the body of a Marine who had been living a double life as a wealthy bachelor.

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.

New leads in the 10 year old case of a 42-year-old nurse brutally murdered in her home; her family questions why it is taking so long to make an arrest.

Michele Davis dies after a traffic accident on the interstate near Des Moines, Iowa; surveillance cameras show that what first appeared as an accident could be something more sinister.

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.

When she interrupts a burglary at home, Diane Pranske is abducted and left for dead across state lines; detectives turn to surveillance video to find her assailant, and investigators try to get justice for this brutal crime.

Michele Davis dies after a traffic accident on the interstate near Des Moines, Iowa; surveillance cameras show that what first appeared as an accident could be something more sinister.

Harm risks his career when he uncovers information linking a pilot's death to a classified military aircraft the government wants to keep secret at all costs.

Harm becomes the pawn of a CIA agent hoping to catch the killer of a Russian spy known for dealing in stolen secrets.

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

The team helps Vance face his demons while uncovering a complex relationship with a killer that endangers his family.

Three convicts - including a brilliant hacker - escape from prison; Paige tries to manage Ralph's expectations when his dad returns.

A woman found eaten by a shark turns out to have been bait for a private investigator hired by wives to catch their unfaithful husbands.

Harm risks his career when he uncovers information linking a pilot's death to a classified military aircraft the government wants to keep secret at all costs.

Harm becomes the pawn of a CIA agent hoping to catch the killer of a Russian spy known for dealing in stolen secrets.

A woman found eaten by a shark turns out to have been bait for a private investigator hired by wives to catch their unfaithful husbands.

Three convicts - including a brilliant hacker - escape from prison; Paige tries to manage Ralph's expectations when his dad returns.

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

Gibbs second-guesses himself when Vance assigns a rookie to work with him on the team's investigation into a deadly bank robbery.

A woman found eaten by a shark turns out to have been bait for a private investigator hired by wives to catch their unfaithful husbands.

Three convicts - including a brilliant hacker - escape from prison; Paige tries to manage Ralph's expectations when his dad returns.

Harm risks his career when he uncovers information linking a pilot's death to a classified military aircraft the government wants to keep secret at all costs.

Harm becomes the pawn of a CIA agent hoping to catch the killer of a Russian spy known for dealing in stolen secrets.

Following the murder of a Russian woman, the NCIS team uncovers evidence that answers who and why Callen was shot six months ago.

It was October 1984 in a small town outside Toronto; a young girl went missing; three months later, Christine Jessop's body was found more than 50 kilometers away from her Queensville home.

Shannon Madill had everything going for her; she had just landed an audition for a role in a television series; was looking forward to moving from Calgary to Edmonton; the audition was recorded on video; hours later she vanished.

When a young mother of two is found brutally murdered at home, suspicion falls on her friends; detectives zero in on multiple suspects who tell different stories, and they don't know who to trust.

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.

A quiet town is shaken to its core when an innocent woman is gunned down in broad daylight; detectives desperately act to find her killer and restore the peace.

When a young mother of two is found brutally murdered at home, suspicion falls on her friends; detectives zero in on multiple suspects who tell different stories, and they don't know who to trust.

Harm and Mac defend an ensign who claims she felt threatened by another officer and that killing him was simply self-defense.

The widow of Harm's best friend asks him for help after her son claims he witnessed a kidnapping and possible murder.

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

The team must play a dangerous war game that leads to very real consequences for one team member.

A musician - who created a controversial algorithm to generate hit songs - helps the team investigate the murder of a music blogger; Drew seeks help connecting with his son.

Horatio investigates the murder of a thrill seeker who was abducted during the course of an extreme kind of role-playing game.

Harm and Mac defend an ensign who claims she felt threatened by another officer and that killing him was simply self-defense.

The widow of Harm's best friend asks him for help after her son claims he witnessed a kidnapping and possible murder.

Horatio investigates the murder of a thrill seeker who was abducted during the course of an extreme kind of role-playing game.

A musician - who created a controversial algorithm to generate hit songs - helps the team investigate the murder of a music blogger; Drew seeks help connecting with his son.

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

The team's investigation into a lieutenant's death is connected to a citywide blackout.

Horatio investigates the murder of a thrill seeker who was abducted during the course of an extreme kind of role-playing game.

A musician - who created a controversial algorithm to generate hit songs - helps the team investigate the murder of a music blogger; Drew seeks help connecting with his son.

Harm and Mac defend an ensign who claims she felt threatened by another officer and that killing him was simply self-defense.

The widow of Harm's best friend asks him for help after her son claims he witnessed a kidnapping and possible murder.

While Hetty is at a Senate hearing in Washington, D.C., a murder investigation leads the team to stolen missiles and a dangerous militia group.

Penny Boudreau reported her 12-year-old daughter Karissa missing on the night of a heavy snowstorm in January 2008; in an emotional news conference, the Nova Scotia mother made a tearful appeal for the public's help in finding the little girl.

The body of 40-year-old doctor Elana Fric was discovered by a passerby in a ravine just north-west of Toronto; the man arrested and charged for the crime sent shockwaves through Toronto's tight-knit medical community.

Shopkeeper Imran Ashgar is shot dead in his store in Columbus, Ohio; with the killers on the run, detectives are in a race against time to capture them before they strike again.

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.

A family's nightmare begins in September 2014 when 8-year-old Hiawayi Robinson leaves her apartment to play but never returns; the desperate search to find her leads investigators to surveillance footage that sends shockwaves through the community.

Shopkeeper Imran Ashgar is shot dead in his store in Columbus, Ohio; with the killers on the run, detectives are in a race against time to capture them before they strike again.

Adm. Chegwidden, with the help of Harm and Mac, investigates the apparent suicide of his mentor while on a hunting trip.

Harm, Mac and Bud represent a corporal who kidnaps his 1-year-old son when faced with the possibility of losing a custody battle.

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.

Thanksgiving plans are put on hold while the team investigates the horrific death of a Marine.

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

Horatio investigates the apparent suicide of an anesthesiologist and finds a link to a patient who died during routine plastic surgery.

Adm. Chegwidden, with the help of Harm and Mac, investigates the apparent suicide of his mentor while on a hunting trip.

Harm, Mac and Bud represent a corporal who kidnaps his 1-year-old son when faced with the possibility of losing a custody battle.

Horatio investigates the apparent suicide of an anesthesiologist and finds a link to a patient who died during routine plastic surgery.

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

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.

The team is forced to rely on information from questionable sources while trying to stop a criminal bent on stealing government secrets.

Horatio investigates the apparent suicide of an anesthesiologist and finds a link to a patient who died during routine plastic surgery.

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

Adm. Chegwidden, with the help of Harm and Mac, investigates the apparent suicide of his mentor while on a hunting trip.

Harm, Mac and Bud represent a corporal who kidnaps his 1-year-old son when faced with the possibility of losing a custody battle.

Forensic scientist Abby Sciuto (Pauley Perrette) joins the team when a murder case resembles the pattern of a serial killer she has been tracking.

Two neighbors that live just two doors apart decide they should get together for a barbeque; that get-together takes a deadly turn that results in a shocking 911 call and a compelling police interrogation.

A Calgary mother disappeared in March 2015; family and friends turned to police as it was out of character for the 24-year-old to just take off; months later, her body was found in a ditch northeast of Calgary by a road construction crew.

New Mexico State Police are called in to investigate when loving couple Gary and Linda Haas fail to reach their vacation campsite; with no forensic evidence and no witnesses, all they can do is scour CCTV footage for clues to unravel the mystery.

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.

When Marcel Reardon is discovered bludgeoned to death outside an apartment building, his friends deny all knowledge of his murder; detectives are convinced at least one of them is lying.

New Mexico State Police are called in to investigate when loving couple Gary and Linda Haas fail to reach their vacation campsite; with no forensic evidence and no witnesses, all they can do is scour CCTV footage for clues to unravel the mystery.

Harm, Mac and Bud fly to Miami to investigate the actions of three retired Navy operatives conducting a private war against drug pushers.

Mac's boyfriend uses evidence from her files against Harm in a sexual harassment case aboard an aircraft carrier.

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.

The team investigates the death of a petty officer and discovers he may have been leading a violent secret life.

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.

A mentally impaired man is the only witness to the murder of a diamond broker gunned down in a parking garage; a body disappears on the way to the medical examiner's laboratory.

Harm, Mac and Bud fly to Miami to investigate the actions of three retired Navy operatives conducting a private war against drug pushers.

Mac's boyfriend uses evidence from her files against Harm in a sexual harassment case aboard an aircraft carrier.

A mentally impaired man is the only witness to the murder of a diamond broker gunned down in a parking garage; a body disappears on the way to the medical examiner's laboratory.

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.

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 the enlisted son of a preacher, who was a colonel, is found dead, the team thinks he may be the victim of a hate crime; Gibbs' father visits for the holidays.

A mentally impaired man is the only witness to the murder of a diamond broker gunned down in a parking garage; a body disappears on the way to the medical examiner's laboratory.

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.

Harm, Mac and Bud fly to Miami to investigate the actions of three retired Navy operatives conducting a private war against drug pushers.

Mac's boyfriend uses evidence from her files against Harm in a sexual harassment case aboard an aircraft carrier.

The NCIS team races to solve the murder of a Marine by an exploding cell phone and to find the remaining men of his former EOD (explosive ordnance disposal) unit before another deadly explosion kills someone else.

Bruce gained his victims' trust, only to turn on them when they were at their most vulnerable; two men reveal their near-death experiences at the hands of notorious serial killer Bruce McArthur.

In 2017, the brutal slayings of Dianna Mah-Jones and Richard Jones sent shockwaves throughout Vancouver.

In the dead of winter, a 14-year-old girl vanishes without a trace on her way to school; investigators follow a trail of surveillance footage.

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.

An 18-year-old named Kyle Farishian is brutally attacked by a masked assailant; with no physical evidence, detectives scrutinize the store's footage for clues.

In the dead of winter, a 14-year-old girl vanishes without a trace on her way to school; investigators follow a trail of surveillance footage.

Mac starts drinking again after her possessive ex-boyfriend is killed in a car-jacking, but she is still followed by an unknown stalker.

In 1977, the neighborhoods of Los Angeles were turned upside down by a series of gruesome strangulation murders, leaving the police to face mounting public pressure to identify the faceless killer and protect the city's women.

Two college students are found dead in Bellingham, Washington a year after the Hillside Strangler murders in Los Angeles come to an end; local security guard Ken Bianchi arouses suspicion after being caught in a string of lies.

An explosive revelation in Bellingham and clues in LA lead investigators to a second Hillside Strangler suspect; as authorities close in on Ken Bianchi's alleged accomplice, a clue from his psychiatric interview tapes leads to a stunning discovery.

As Angelo Buono's trial begins, all eyes are on Ken Bianchi as the state's key witness, but as Bianchi's credibility crumbles, so does the prosecution's case.

Mac starts drinking again after her possessive ex-boyfriend is killed in a car-jacking, but she is still followed by an unknown stalker.