A Marine falls ill during a training mission due to an attack by a genetic weapon; Deeks struggles with balancing work and home life when Rosa comes down with the flu.

NCIS investigates an arson attack at Global West Ventures Corp., a naval defense contractor; Rountree connects with an ex; Kilbride gives Callen files on Pembrook.

Mike and Frank meet unique collectors and discover that the most interesting people have the coolest stuff.

Duane begs Chuck to come back when a gasoline shortage happens in Yellowknife.

Duane lands a huge contract; Adam must work without Chuck.

The Seacrest finally hits the water, but the building of the Pipe Dream requires all hands on deck; a guitar maker comes to Kevin in search of unique wood; Sarah goes on a mission to find a dress for Jack's wedding.

Tempers flare as Kevin and his team finalize building the Pipe Dream and finally get the boat out on the water; with the snow finally gone, the crew heads back up the mountain to yard wood; Kevin has a special surprise for Jack and Rachel's wedding.

A lone wolf prisoner, with aspirations of writing crime novels, ends up the star of his own break out story when he figures out how to escape from one of Mississippi's oldest and most notorious prison farms, Parchman Penitentiary.

On the Hanoi Hilton, an American POW prison of the Vietnam War located in the city of Hanoi, Vietnam; captives include John McCain, the group of airmen who invent a secret communication code, and Jerimiah Denton who sneaks messages home on live TV.

A maximum-security prison on the banks of the Hudson, just 30 miles north of New York City, gives rise to the saying, being sent up the river.

A Marine falls ill during a training mission due to an attack by a genetic weapon; Deeks struggles with balancing work and home life when Rosa comes down with the flu.

NCIS investigates an arson attack at Global West Ventures Corp., a naval defense contractor; Rountree connects with an ex; Kilbride gives Callen files on Pembrook.

When the team's armored vehicle is stolen, they must stop the vehicle from being used in a potential terrorist attack; Hondo and Nischelle prepare for their baby's gender reveal party.

When a convicted killer makes a prison break, the team works to protect the people on his hit list; Hondo unexpectedly crosses paths with a former flame.

When the team stops a robbery of a department store, they fear the crime was designed to distract from something more sinister; Hondo enlists Street to connect with Powell after she ignores orders in the field.

Two previous champions go head to head in a 5-hour forging round; they make their own signature San Mai blades for the chance to compete against one of the titans of the forge.

A lone wolf prisoner, with aspirations of writing crime novels, ends up the star of his own break out story when he figures out how to escape from one of Mississippi's oldest and most notorious prison farms, Parchman Penitentiary.

On the Hanoi Hilton, an American POW prison of the Vietnam War located in the city of Hanoi, Vietnam; captives include John McCain, the group of airmen who invent a secret communication code, and Jerimiah Denton who sneaks messages home on live TV.

A maximum-security prison on the banks of the Hudson, just 30 miles north of New York City, gives rise to the saying, being sent up the river.

The story of the most celebrated warrior king in history still stirs fascination more than 2000 years after his death.

A look at tales of strange things below Earth's surface, including sea beasts, hidden cities, and tunnels carved by giant sloths.

The drilling operation in the mysterious Mesa on Skinwalker Ranch leads to a stunning and disturbing chain of events.

A lone wolf prisoner, with aspirations of writing crime novels, ends up the star of his own break out story when he figures out how to escape from one of Mississippi's oldest and most notorious prison farms, Parchman Penitentiary.

A look at tales of strange things below Earth's surface, including sea beasts, hidden cities, and tunnels carved by giant sloths.

The drilling operation in the mysterious Mesa on Skinwalker Ranch leads to a stunning and disturbing chain of events.

The story of the most celebrated warrior king in history still stirs fascination more than 2000 years after his death.

Two previous champions go head to head in a 5-hour forging round; they make their own signature San Mai blades for the chance to compete against one of the titans of the forge.

On the Hanoi Hilton, an American POW prison of the Vietnam War located in the city of Hanoi, Vietnam; captives include John McCain, the group of airmen who invent a secret communication code, and Jerimiah Denton who sneaks messages home on live TV.

A maximum-security prison on the banks of the Hudson, just 30 miles north of New York City, gives rise to the saying, being sent up the river.

The story of the most celebrated warrior king in history still stirs fascination more than 2000 years after his death.

Ted and Justin travel to Market Village Mall in Markham, Ontario, where they are tasked with carefully unlocking mysterious vault doors while the demolition team begins tear down.

After aborting his mission last season, lone wolf prospector David Muise returns undeterred and looking for a partner.

The guys haggle with a teenage girl over classic old Canadian canoes.

Ted and Justin travel to Market Village Mall in Markham, Ontario, where they are tasked with carefully unlocking mysterious vault doors while the demolition team begins tear down.

After aborting his mission last season, lone wolf prospector David Muise returns undeterred and looking for a partner.

A traveler's belongings raise repeated alarms; a man's reasons for studying in Canada may not be academic; an American couple make the move to Alaska.

A currency dog sniffs out thousands in undeclared cash; an aspiring actor can't keep track of the plot; officers arrest a wanted burglar.

Col. Potter's mare, Sophie, mysteriously disappears from her corral; Hawkeye and B.J. try to help a young Korean.

The sudden illness of a USO singer brings the touring troupe to the 4077th.

The NCIS team's murder investigation of a man who sold military information leads to the abduction of a doctor whose cutting-edge neurotechnology could be developed into advanced weaponry; Callen tries to have an important talk with Arkady.

The team works with the FBI to hunt one of its most-wanted fugitives; Hondo and Nichelle are faced with an unexpected development in her pregnancy.

In a perfectly planned robbery, thieves steal half a billion dollars in masterpieces from the Gardner Museum in Boston; it's been three decades since the brazen heist, and an exhaustive search has failed to recover the stolen goods.

A notorious tragedy leads to one of the darkest chapters in early American history; in 1692, fear rips through the small town of Salem, Massachusetts; accusations fly and many people are put to death.

Col. Potter's mare, Sophie, mysteriously disappears from her corral; Hawkeye and B.J. try to help a young Korean.

The sudden illness of a USO singer brings the touring troupe to the 4077th.

The team works with the FBI to hunt one of its most-wanted fugitives; Hondo and Nichelle are faced with an unexpected development in her pregnancy.

A look at tales of strange things below Earth's surface, including sea beasts, hidden cities, and tunnels carved by giant sloths.

The drilling operation in the mysterious Mesa on Skinwalker Ranch leads to a stunning and disturbing chain of events.

Dannemora prison opens in 1845 as a source of free labor for the local mines; Kenneth Kimes takes a Court TV producer hostage; Tupac Shakur stirs up trouble; Richard Matt and David Sweat attempt to escape.

San Quentin located in Marin County on the San Francisco Bay is California's oldest prison dating back to the gold rush, and home to the state's only gas chamber.

Previous champions battle for the chance to compete against one of the titans of the forge; but first they must face off in a brutal five-hour challenge, where they have to pick a box and build a signature blade using whatever method is inside.

A notorious tragedy leads to one of the darkest chapters in early American history; in 1692, fear rips through the small town of Salem, Massachusetts; accusations fly and many people are put to death.

Dannemora prison opens in 1845 as a source of free labor for the local mines; Kenneth Kimes takes a Court TV producer hostage; Tupac Shakur stirs up trouble; Richard Matt and David Sweat attempt to escape.

San Quentin located in Marin County on the San Francisco Bay is California's oldest prison dating back to the gold rush, and home to the state's only gas chamber.

Previous champions battle for the chance to compete against one of the titans of the forge; but first they must face off in a brutal five-hour challenge, where they have to pick a box and build a signature blade using whatever method is inside.

In a perfectly planned robbery, thieves steal half a billion dollars in masterpieces from the Gardner Museum in Boston; it's been three decades since the brazen heist, and an exhaustive search has failed to recover the stolen goods.

A notorious tragedy leads to one of the darkest chapters in early American history; in 1692, fear rips through the small town of Salem, Massachusetts; accusations fly and many people are put to death.

The team works with the FBI to hunt one of its most-wanted fugitives; Hondo and Nichelle are faced with an unexpected development in her pregnancy.

The NCIS team's murder investigation of a man who sold military information leads to the abduction of a doctor whose cutting-edge neurotechnology could be developed into advanced weaponry; Callen tries to have an important talk with Arkady.

At the site of the former Yugoslavian Consulate, Ted hopes to salvage invaluable secret relics of the Cold War; back at the National, a buyer shows interest in a vintage WW II truck but Ted has to convince him the price is right.

The final words of a lifelong gold hunter send Adam, Kru and Daryl Friesen through an icy gauntlet high above Pitt Lake.

The Pickers load up on Newfoundland collectibles.

At the site of the former Yugoslavian Consulate, Ted hopes to salvage invaluable secret relics of the Cold War; back at the National, a buyer shows interest in a vintage WW II truck but Ted has to convince him the price is right.

The final words of a lifelong gold hunter send Adam, Kru and Daryl Friesen through an icy gauntlet high above Pitt Lake.

An American's trip to Alaska heads south; officers suspect a convicted drug dealer is taking his business north; a ship containing weapons is searched.

Officers stop a father and son packing loads of ammo, but can't find the gun. Meanwhile, the Vessel Search Unit find a suspect sailor on a US tug.

The ailing USO singer undergoes emergency surgery as the troupe entertains the camp.

The problems of three wounded soldiers disrupt the lives of those around them.

When the team investigates the murder of a man about to reveal the source of a counterfeiting operation, an old acquaintance becomes their prime suspect and reveals the true reason for her return; Deeks struggles during training.

When an armored truck heist ends in bloodshed, the team races to track down priceless jewels before more lives are lost; Hondo's mother, Charice, visits.

A century ago, shipping packages was slow and shipping overnight was impossible, until two Seattle brothers risk everything to reinvent shipping packages for all; a tenacious Yale graduate creates a world-famous express delivery service.

Daytime talk shows in the 1980s is aimed at a stay-at-home female audience and has conversational topics and polite discussion; a young politician-turned-TV host rewrites the rules when an unexpected fight breaks out between his guests.

The ailing USO singer undergoes emergency surgery as the troupe entertains the camp.

The problems of three wounded soldiers disrupt the lives of those around them.

When an armored truck heist ends in bloodshed, the team races to track down priceless jewels before more lives are lost; Hondo's mother, Charice, visits.

Dannemora prison opens in 1845 as a source of free labor for the local mines; Kenneth Kimes takes a Court TV producer hostage; Tupac Shakur stirs up trouble; Richard Matt and David Sweat attempt to escape.

San Quentin located in Marin County on the San Francisco Bay is California's oldest prison dating back to the gold rush, and home to the state's only gas chamber.

Previous champions battle for the chance to compete against one of the titans of the forge; but first they must face off in a brutal five-hour challenge, where they have to pick a box and build a signature blade using whatever method is inside.

A crew of car lovers at a garage in the Rocky Mountains transforms abandoned heaps of rust into collectible classics.

Fitting into the clean-cut roles that comedians occupied in the 1950s, two up-and-coming stand-ups make names for themselves; as society shifts and counter-culture movements take hold, both men realize they need to adapt their comedy.

Daytime talk shows in the 1980s is aimed at a stay-at-home female audience and has conversational topics and polite discussion; a young politician-turned-TV host rewrites the rules when an unexpected fight breaks out between his guests.

A century ago, shipping packages was slow and shipping overnight was impossible, until two Seattle brothers risk everything to reinvent shipping packages for all; a tenacious Yale graduate creates a world-famous express delivery service.

Fitting into the clean-cut roles that comedians occupied in the 1950s, two up-and-coming stand-ups make names for themselves; as society shifts and counter-culture movements take hold, both men realize they need to adapt their comedy.

Daytime talk shows in the 1980s is aimed at a stay-at-home female audience and has conversational topics and polite discussion; a young politician-turned-TV host rewrites the rules when an unexpected fight breaks out between his guests.

A century ago, shipping packages was slow and shipping overnight was impossible, until two Seattle brothers risk everything to reinvent shipping packages for all; a tenacious Yale graduate creates a world-famous express delivery service.

When an armored truck heist ends in bloodshed, the team races to track down priceless jewels before more lives are lost; Hondo's mother, Charice, visits.

When the team investigates the murder of a man about to reveal the source of a counterfeiting operation, an old acquaintance becomes their prime suspect and reveals the true reason for her return; Deeks struggles during training.

Ted and Justin salvage at a century-old warehouse that was once the mail order depot for one of North America's largest department stores; Ted promises Ryan big profits from the timber inside the massive structure, but things don't go as planned.

An old map connected to testimony from an 1891 eyewitness account of Slumach's hanging sheds light on the legend.

The pickers make a friendly bet to find the greatest piece of kitsch in Newfoundland.

Ted and Justin salvage at a century-old warehouse that was once the mail order depot for one of North America's largest department stores; Ted promises Ryan big profits from the timber inside the massive structure, but things don't go as planned.

An old map connected to testimony from an 1891 eyewitness account of Slumach's hanging sheds light on the legend.

A young man's lies could keep him from his fiancee, while the discovery of a gold bar and lots of cash spell trouble for another traveller.

Suspicions about a convicted smuggler uncover a scam; questions are raised when officers stumble upon a suitcase full of meat.

When a general's emissary is sent to the 4077th to check it out, rumors about the visitor's real purpose run rampant.

Hawkeye's letter begs Truman to stop the war.

An organized crime leader tries to buy stolen defense technology; Deeks is kicked out of NCIS training only to find that Hetty has a life-changing surprise for him.

The team races to uncover the identities of kidnappers holding a prison guard's family hostage; Tan is faced with a difficult personal decision.

Corey, Chum and Rick are back in Vegas and unpacking all the treasures they found on the road and revealing some never-before-seen items.

On ADX, "Alcatraz of the Rockies" located in Florence, Colorado, Ishmael Petty attacks the staff; Tommy Silverstein finds a way to communicate with Ramzi Youssef; an inmate starves himself to protest the prison's policies.

Three stories of men willing to take risks to escape the cold, dark cells of "the Rock"; six convicts organize a jailbreak; three men attempt an elaborate breakout.

When a general's emissary is sent to the 4077th to check it out, rumors about the visitor's real purpose run rampant.

Hawkeye's letter begs Truman to stop the war.

The team races to uncover the identities of kidnappers holding a prison guard's family hostage; Tan is faced with a difficult personal decision.

For millennia, there has been speculation about how the world will end, from the detailed account in the Book of Revelation, to the prophecies foretold by Nostradamus; a look into if whether or not any of these predictions could come true.

On ADX, "Alcatraz of the Rockies" located in Florence, Colorado, Ishmael Petty attacks the staff; Tommy Silverstein finds a way to communicate with Ramzi Youssef; an inmate starves himself to protest the prison's policies.

Three stories of men willing to take risks to escape the cold, dark cells of "the Rock"; six convicts organize a jailbreak; three men attempt an elaborate breakout.

Follows the American Mafia from their early development in New York City neighborhoods; how public violence, involvement in the drug trade, and appearances at government hearings affect their operations and conflict with their code of honor.

On ADX, "Alcatraz of the Rockies" located in Florence, Colorado, Ishmael Petty attacks the staff; Tommy Silverstein finds a way to communicate with Ramzi Youssef; an inmate starves himself to protest the prison's policies.

Three stories of men willing to take risks to escape the cold, dark cells of "the Rock"; six convicts organize a jailbreak; three men attempt an elaborate breakout.

Follows the American Mafia from their early development in New York City neighborhoods; how public violence, involvement in the drug trade, and appearances at government hearings affect their operations and conflict with their code of honor.

For millennia, there has been speculation about how the world will end, from the detailed account in the Book of Revelation, to the prophecies foretold by Nostradamus; a look into if whether or not any of these predictions could come true.

Corey, Chum and Rick are back in Vegas and unpacking all the treasures they found on the road and revealing some never-before-seen items.

The team races to uncover the identities of kidnappers holding a prison guard's family hostage; Tan is faced with a difficult personal decision.

An organized crime leader tries to buy stolen defense technology; Deeks is kicked out of NCIS training only to find that Hetty has a life-changing surprise for him.

Ted's new salvage job is a blast from the past: a classic bowling alley; Ryan leads his team on a high-stakes overnight highway bridge demolition.

A recurring mine marker points the team east to neighboring Harrison Lake as leads and legend line up; clues found in a 1950s article by an investigative reporter place a lost Spanish gold mine directly on Slumach's path.

Scott and Sheldon travel to southern British Columbia, where a hot tip leads to the mother lode.

Ted's new salvage job is a blast from the past: a classic bowling alley; Ryan leads his team on a high-stakes overnight highway bridge demolition.

A recurring mine marker points the team east to neighboring Harrison Lake as leads and legend line up; clues found in a 1950s article by an investigative reporter place a lost Spanish gold mine directly on Slumach's path.

Some engineering students carry out an unusual experiment; officers find a construction worker's story has no foundations.

A jewelry box contains something valuable; a biking teen hits a roadblock; a Thai sailor may be land-locked over computer content; a vagabond musician must prove his worth.

Col. Potter orders Klinger to tutor him for driving school on a night Klinger has set aside for a big poker game.

Charles receives a week's supply of newspapers from home at a time when no other mail is getting through.

When Sam's daughter is kidnapped after leading citywide protests, he will stop at nothing to find her; Deeks rejoins NCIS; Callen searches for answers about Anna.

Following a string of violent home robberies, the team rushes to stop a crew targeting elderly victims; Hondo's longtime friend and former Marine squad leader Danny Wright turns to Hondo for help when his daughter goes missing.

Six men, led by the mastermind, Nuno Pontes, escaped Pittsburgh State Penitentiary by tunneling to freedom under the prison wall; they made it as far as Texas before being caught and returned to prison.

A spree of gruesome murders by Jack the Ripper shocks Victorian England -- and the world; the homicidal maniac's identity still remains a mystery.

Col. Potter orders Klinger to tutor him for driving school on a night Klinger has set aside for a big poker game.

Charles receives a week's supply of newspapers from home at a time when no other mail is getting through.

Following a string of violent home robberies, the team rushes to stop a crew targeting elderly victims; Hondo's longtime friend and former Marine squad leader Danny Wright turns to Hondo for help when his daughter goes missing.

Follows the American Mafia from their early development in New York City neighborhoods; how public violence, involvement in the drug trade, and appearances at government hearings affect their operations and conflict with their code of honor.

A crew of car lovers at a garage in the Rocky Mountains transforms abandoned heaps of rust into collectible classics.

The source of Slumach's lost gold.

Six men, led by the mastermind, Nuno Pontes, escaped Pittsburgh State Penitentiary by tunneling to freedom under the prison wall; they made it as far as Texas before being caught and returned to prison.

A crew of car lovers at a garage in the Rocky Mountains transforms abandoned heaps of rust into collectible classics.

The source of Slumach's lost gold.

A spree of gruesome murders by Jack the Ripper shocks Victorian England -- and the world; the homicidal maniac's identity still remains a mystery.

A crew of car lovers at a garage in the Rocky Mountains transforms abandoned heaps of rust into collectible classics.

Following a string of violent home robberies, the team rushes to stop a crew targeting elderly victims; Hondo's longtime friend and former Marine squad leader Danny Wright turns to Hondo for help when his daughter goes missing.

When Sam's daughter is kidnapped after leading citywide protests, he will stop at nothing to find her; Deeks rejoins NCIS; Callen searches for answers about Anna.

Under the watchful eye of Uncle Ryan, Julian puts his operator skills to the test during a delicate and risky demolition job.

The source of Slumach's lost gold.

Scott and Sheldon uncover a silver saddle and cedar-stripped canoes in southern British Columbia.

Under the watchful eye of Uncle Ryan, Julian puts his operator skills to the test during a delicate and risky demolition job.

The source of Slumach's lost gold.

The X-ray machine isn't fooled by aluminum foil wrapping; a truck full of plastic seems like it may have been tampered with.

A British traveler hopes to turn their back on their failed marriage; officers do a close inspection of a car that may contain drugs.

Klinger is accused of being responsible for a rash of thefts around the camp.

Klinger, facing a court-martial, agrees to let Charles defend him.

When Callen goes to the National Counterterrorism Center on the pretext of interrogating a Russian asset from the crashed plane case he investigated months earlier, the tables are turned and he is accused of being a Russian agent.

SWAT teams up with the DEA to conduct a massive gang sweep, only to discover that a vicious cartel is planting roots in the city and endangering numerous lives; Hicks marks an important anniversary.

From mysterious wounds that appear for no apparent reason, to a peculiar madness that compels people to dance themselves to death; looking at bizarre afflictions.

For decades, incredible claims have been made about an extraterrestrial presence on Earth, and the government has gone to great lengths to discredit them.

Klinger is accused of being responsible for a rash of thefts around the camp.

Klinger, facing a court-martial, agrees to let Charles defend him.

SWAT teams up with the DEA to conduct a massive gang sweep, only to discover that a vicious cartel is planting roots in the city and endangering numerous lives; Hicks marks an important anniversary.

The source of Slumach's lost gold.

From mysterious wounds that appear for no apparent reason, to a peculiar madness that compels people to dance themselves to death; looking at bizarre afflictions.

As humanity makes plans to travel beyond the Moon to new worlds, it is necessary to assess how humans are preparing to become extraterrestrials; analyzing how humanity will survive this trip into the unknown.

Puma Punku in Bolivia features stone blocks, each carved with precision; the blocks lie scattered across the landscape, confusing archaeologists as to what the ancient site might have been.

The drilling operation in the mysterious Mesa on Skinwalker Ranch leads to a stunning and disturbing chain of events.

As humanity makes plans to travel beyond the Moon to new worlds, it is necessary to assess how humans are preparing to become extraterrestrials; analyzing how humanity will survive this trip into the unknown.

Puma Punku in Bolivia features stone blocks, each carved with precision; the blocks lie scattered across the landscape, confusing archaeologists as to what the ancient site might have been.

From mysterious wounds that appear for no apparent reason, to a peculiar madness that compels people to dance themselves to death; looking at bizarre afflictions.

For decades, incredible claims have been made about an extraterrestrial presence on Earth, and the government has gone to great lengths to discredit them.

SWAT teams up with the DEA to conduct a massive gang sweep, only to discover that a vicious cartel is planting roots in the city and endangering numerous lives; Hicks marks an important anniversary.

When Callen goes to the National Counterterrorism Center on the pretext of interrogating a Russian asset from the crashed plane case he investigated months earlier, the tables are turned and he is accused of being a Russian agent.

Mike and Avery try to get an auctioneer to help them downsize their collections, but Avery scares him off; frame issues leave Mike's restoration of a Diamond T truck dead in the water.

A crew of car lovers at a garage in the Rocky Mountains transforms abandoned heaps of rust into collectible classics.

Dale and his five-year old son are in peril on the shoulder of a wintery highway after his truck dies; Craig's delivery goes awry.

The source of Slumach's lost gold.

A crew of car lovers at a garage in the Rocky Mountains transforms abandoned heaps of rust into collectible classics.

Fitting into the clean-cut roles that comedians occupied in the 1950s, two up-and-coming stand-ups make names for themselves; as society shifts and counter-culture movements take hold, both men realize they need to adapt their comedy.

A look at some staples of Thanksgiving dinner that weren't around until a few brands used technological advances to reinvent turkey, stuffing, cranberry sauce, pumpkin pie and more; food innovators made each part of the meal accessible.

Rick checks out the only 1933 Double Eagle gold coin for sale; Chum visits Disneyland with a miniature model of Main Street USA; Corey hopes for a big bang when he investigates a tiny Japanese matchlock pistol.

Mike tries pole dancing when a dumpster-diving artist invites him in; Robbie and Jersey uncover a bonanza of antique signs from the NYC subway.

Fitting into the clean-cut roles that comedians occupied in the 1950s, two up-and-coming stand-ups make names for themselves; as society shifts and counter-culture movements take hold, both men realize they need to adapt their comedy.

As humanity makes plans to travel beyond the Moon to new worlds, it is necessary to assess how humans are preparing to become extraterrestrials; analyzing how humanity will survive this trip into the unknown.

Puma Punku in Bolivia features stone blocks, each carved with precision; the blocks lie scattered across the landscape, confusing archaeologists as to what the ancient site might have been.

A crew of car lovers at a garage in the Rocky Mountains transforms abandoned heaps of rust into collectible classics.

When NCIS investigates a shootout on a boat in which a rare cultural artifact is stolen, they're shocked to learn who owns the boat.

While Agent Rountree and Fatima search for Kilbride, who has been missing, they are ambushed and learn that every member of the team has a $200,000 bounty on their head.

When a cop on the verge of shutting down a major drug operation is abducted, Hondo and the squad race to save one of their own before it's too late; Luca grows concerned about sudden changes in Hicks' behavior.

When an intruder breaks into the home of a Hollywood actress, Hondo and the team are forced to partner with an old nemesis to track down a dangerous criminal; Tan struggles to find the perfect anniversary gift for his wife.

When violence erupts at a popular food truck festival, the team must contend with a deadly cartel determined to recover a lost drug shipment at any cost.

When a cop on the verge of shutting down a major drug operation is abducted, Hondo and the squad race to save one of their own before it's too late; Luca grows concerned about sudden changes in Hicks' behavior.

When an intruder breaks into the home of a Hollywood actress, Hondo and the team are forced to partner with an old nemesis to track down a dangerous criminal; Tan struggles to find the perfect anniversary gift for his wife.

When violence erupts at a popular food truck festival, the team must contend with a deadly cartel determined to recover a lost drug shipment at any cost.

When NCIS investigates a shootout on a boat in which a rare cultural artifact is stolen, they're shocked to learn who owns the boat.

While Agent Rountree and Fatima search for Kilbride, who has been missing, they are ambushed and learn that every member of the team has a $200,000 bounty on their head.

Mike and Frank learn it's not always easy getting what they want as they face some of the toughest negotiators on the road.

The source of Slumach's lost gold.

Adam and Duane are forced to work things out on a flight to Alert, Earth's northernmost settlement.

Joe finds out that Gord has taken a job with a rival airline; while training on the C-46, Larry makes a near fatal error.

Kevin Wenstob negotiates a deal with a big new customer who drives a hard bargain; Erik struggles to fix the mill's broken log loader and Sarah catches an interloper at the mill.

Logger Kevin Wenstob's best day ever turns into his worst, when a sudden disaster threatens to shut down his timber claim and his sawmill.

A German American pilot, Dieter Dengler, uses survival skills honed as a child to escape a secret prison in Laos during the early years of the Vietnam war.

Dannemora prison opens in 1845 as a source of free labor for the local mines; Kenneth Kimes takes a Court TV producer hostage; Tupac Shakur stirs up trouble; Richard Matt and David Sweat attempt to escape.

San Quentin located in Marin County on the San Francisco Bay is California's oldest prison dating back to the gold rush, and home to the state's only gas chamber.

When NCIS investigates a shootout on a boat in which a rare cultural artifact is stolen, they're shocked to learn who owns the boat.

While Agent Rountree and Fatima search for Kilbride, who has been missing, they are ambushed and learn that every member of the team has a $200,000 bounty on their head.

When a cop on the verge of shutting down a major drug operation is abducted, Hondo and the squad race to save one of their own before it's too late; Luca grows concerned about sudden changes in Hicks' behavior.

When an intruder breaks into the home of a Hollywood actress, Hondo and the team are forced to partner with an old nemesis to track down a dangerous criminal; Tan struggles to find the perfect anniversary gift for his wife.

When violence erupts at a popular food truck festival, the team must contend with a deadly cartel determined to recover a lost drug shipment at any cost.

Previous champions battle for the chance to compete against one of the titans of the forge; but first they must face off in a brutal five-hour challenge, where they have to pick a box and build a signature blade using whatever method is inside.

A German American pilot, Dieter Dengler, uses survival skills honed as a child to escape a secret prison in Laos during the early years of the Vietnam war.

Dannemora prison opens in 1845 as a source of free labor for the local mines; Kenneth Kimes takes a Court TV producer hostage; Tupac Shakur stirs up trouble; Richard Matt and David Sweat attempt to escape.

San Quentin located in Marin County on the San Francisco Bay is California's oldest prison dating back to the gold rush, and home to the state's only gas chamber.

The Titanic's tragic story captures the imagination of the public and experts of all kinds, who, decades after the ship's demise, still seek answers; a look into new evidence that might reveal more about how and why the Titanic sank.

Imagining free falling 30,000 feet without a parachute, or being buried alive and living to tell the tale; these are improbable yet true-life tales of surviving the most extraordinary conditions.

After hearing incredible testimony about a UFO crashing on Skinwalker Ranch many years ago, the team makes a shocking discovery inside the rocky Mesa.

A German American pilot, Dieter Dengler, uses survival skills honed as a child to escape a secret prison in Laos during the early years of the Vietnam war.

Imagining free falling 30,000 feet without a parachute, or being buried alive and living to tell the tale; these are improbable yet true-life tales of surviving the most extraordinary conditions.

After hearing incredible testimony about a UFO crashing on Skinwalker Ranch many years ago, the team makes a shocking discovery inside the rocky Mesa.

The Titanic's tragic story captures the imagination of the public and experts of all kinds, who, decades after the ship's demise, still seek answers; a look into new evidence that might reveal more about how and why the Titanic sank.

Previous champions battle for the chance to compete against one of the titans of the forge; but first they must face off in a brutal five-hour challenge, where they have to pick a box and build a signature blade using whatever method is inside.

Dannemora prison opens in 1845 as a source of free labor for the local mines; Kenneth Kimes takes a Court TV producer hostage; Tupac Shakur stirs up trouble; Richard Matt and David Sweat attempt to escape.

San Quentin located in Marin County on the San Francisco Bay is California's oldest prison dating back to the gold rush, and home to the state's only gas chamber.

The Titanic's tragic story captures the imagination of the public and experts of all kinds, who, decades after the ship's demise, still seek answers; a look into new evidence that might reveal more about how and why the Titanic sank.

Vic brings Julien and Ted on a road trip to Northern Ontario to salvage a pair of vintage gas pumps to add to his personal collection.

A major setback in the final stages of restoring a 1964 Parisienne blows Mike's budget; the day of Mike's auction and the biggest financial gamble of his life arrives; Mike grapples with regret, and chaos threatens to derail the entire event.

Mike kicks off his fifth year in business with the restoration of a rare 1971 International Scout II, before teaming up with his brothers to find a new home for their late father's 1964 Mercury motor.

Vic brings Julien and Ted on a road trip to Northern Ontario to salvage a pair of vintage gas pumps to add to his personal collection.

A major setback in the final stages of restoring a 1964 Parisienne blows Mike's budget; the day of Mike's auction and the biggest financial gamble of his life arrives; Mike grapples with regret, and chaos threatens to derail the entire event.

A foreign student's possessions are full of surprises; an X-ray machine finds a strange shape inside of a container.

A tattoo artist brings the tools of his trade on his vacation; homemade treats conceal a deadly surprise.

Visiting British soldiers explain an age-old tradition about the day after Christmas when the enlisted men and officers trade places for the day.

Klinger, while ill, communicates with the spirit of a dead soldier.

After Callen receives a cryptic message from Hetty, he tracks down the person tailing him, bringing him to a remote location teeming with Russians -- and face to face with Anna.

The team works with the DEA to stop a ruthless cartel boss waging war on the streets of Los Angeles as he exacts revenge on those who killed his son.

One of history's most notorious pirates, Blackbeard, is said to have had a treasure worth millions of dollars; after centuries of searching, the legendary hoard remains missing.

In 1698, Capt. William Kidd raids a ship on the high seas and seizes its vast treasure, but Kidd is hanged before revealing where he stashed the loot; a look at what happened to the lost booty and where it is now.

Visiting British soldiers explain an age-old tradition about the day after Christmas when the enlisted men and officers trade places for the day.

Klinger, while ill, communicates with the spirit of a dead soldier.

The team works with the DEA to stop a ruthless cartel boss waging war on the streets of Los Angeles as he exacts revenge on those who killed his son.

Imagining free falling 30,000 feet without a parachute, or being buried alive and living to tell the tale; these are improbable yet true-life tales of surviving the most extraordinary conditions.

After hearing incredible testimony about a UFO crashing on Skinwalker Ranch many years ago, the team makes a shocking discovery inside the rocky Mesa.

Attica, a 90-year-old maximum-security prison in upstate New York, has a legacy of violence and inmate abuse stretching back decades; stories include the serial killer Son of Sam who gets his throat slashed, a successful escape, and a riot.

Leavenworth located 25-miles northwest of Kansas City, was the largest maximum-security federal prison in the United States for over a hundred years; Carl Panzram, Robert Stroud and Tommy Silverstein share stories of life behind its walls.

After facing off against a fellow champ, only one smith will remain and be tasked with making a M1917 Naval Cutlass, against either Gladiator of the Forge Jesse Hu, Superchamp Collin Sage, or Undefeated Judge Ben Abbott.

In 1698, Capt. William Kidd raids a ship on the high seas and seizes its vast treasure, but Kidd is hanged before revealing where he stashed the loot; a look at what happened to the lost booty and where it is now.

Attica, a 90-year-old maximum-security prison in upstate New York, has a legacy of violence and inmate abuse stretching back decades; stories include the serial killer Son of Sam who gets his throat slashed, a successful escape, and a riot.

Leavenworth located 25-miles northwest of Kansas City, was the largest maximum-security federal prison in the United States for over a hundred years; Carl Panzram, Robert Stroud and Tommy Silverstein share stories of life behind its walls.

After facing off against a fellow champ, only one smith will remain and be tasked with making a M1917 Naval Cutlass, against either Gladiator of the Forge Jesse Hu, Superchamp Collin Sage, or Undefeated Judge Ben Abbott.

One of history's most notorious pirates, Blackbeard, is said to have had a treasure worth millions of dollars; after centuries of searching, the legendary hoard remains missing.

In 1698, Capt. William Kidd raids a ship on the high seas and seizes its vast treasure, but Kidd is hanged before revealing where he stashed the loot; a look at what happened to the lost booty and where it is now.

The team works with the DEA to stop a ruthless cartel boss waging war on the streets of Los Angeles as he exacts revenge on those who killed his son.

After Callen receives a cryptic message from Hetty, he tracks down the person tailing him, bringing him to a remote location teeming with Russians -- and face to face with Anna.

As the Priestly's look to the future, Ted's salvage team is tasked with clearing out The National with a huge one day sale.

Mike burns the candle at both ends, working at remote locations for his rock scaling business, while trying to manage the shop's restoration of a 1969 Road Runner convertible from afar.

Mike enlists his buddy Dave to help him rid the Field of Dreams of a junk-stuffed school bus; Richard revives the luxury of private rail cars using an old trailer; Russell leans on an old friend to help him build a truck.

As the Priestly's look to the future, Ted's salvage team is tasked with clearing out The National with a huge one day sale.

Mike burns the candle at both ends, working at remote locations for his rock scaling business, while trying to manage the shop's restoration of a 1969 Road Runner convertible from afar.

A traveler swallows an unknown substance; a Thai vacation guide offers more than holiday advice; a car dealer takes a long road to the truth; hard iced tea and a passenger bring attention to a trucker.

A driver under the influence risks ending the family vacation; a trip behind the wheel of a borrowed truck raises suspicions.

B.J. attempts to pull off the ultimate practical joke on Hawkeye.

A noted war correspondent visits the 4077th to do a story on blood donated by his readers.

To rescue Joelle from further torture by the Russians, Callen and the team must offer up Anna as bait to Katya; Callen finally discovers who accused him of being a Russian spy.

Former Marine Daniel "Hondo" Harrelson is tasked to run a specialized tactical unit in Los Angeles.

James Gamble and Harley Procter invent a revolutionary new soap that revolutionizes America and opens up a market to entrepreneurs in the late 1800s, when Americans rarely bathed and deadly diseases were commonplace.

Fitting into the clean-cut roles that comedians occupied in the 1950s, two up-and-coming stand-ups make names for themselves; as society shifts and counter-culture movements take hold, both men realize they need to adapt their comedy.

B.J. attempts to pull off the ultimate practical joke on Hawkeye.

A noted war correspondent visits the 4077th to do a story on blood donated by his readers.

Former Marine Daniel "Hondo" Harrelson is tasked to run a specialized tactical unit in Los Angeles.