Police are baffled when body parts turn up in two different southeast Asia tourist destinations.

Hannah Witheridge and David Miller are perfect strangers who hail from coastal towns in the UK. They both decide to take a backpacking trip to Thailand before pursuing Master's Degrees in their respective fields. These two kindred spirits meet for the first time on the small island of Koh Tao. The island is a tropical paradise. Its' waters teem with scores of fish and wildlife. It's a romantic idyllic setting, and the young pair hit it off immediately. But something sinister is lurking in the shadows, and this budding romance ends in a horrific tragedy that shocks the global community.

When a married couple are found brutally murdered in their St Maarten condo, an entire island is left in shock. But with no potential suspects and minimal evidence, the police try to unravel the mystery behind the slayings before it's too late.

When a Japanese tourist goes missing in New Orleans, police race to identify the men whose images are discovered on her digital camera.

In the sweltering heat of a New Orleans summer, a young Japanese tourist goes missing; soon after, a badly decomposing body is discovered; suspects are plentiful.

When a beloved married couple is found murdered in their flat on Sint Maarten, the whole island is in shock. With no suspects and minimal evidence, the police try to unravel the mystery behind the murders.

A Canadian gambler is found beaten to death in the stairwell of a Vegas hotel, and detectives mount a decade-long investigation in their effort to nail the killer.

A woman travels to Fort Myers, Florida only to become the next victim in a series of grisly murders.

The 10th Earl of Shaftesbury spends much of his time in the bars of Cannes, in the south of France, spending what remains of the Shaftesbury fortune.

Friends Tatiana and Liubov trade the cold Siberian winter for a few weeks of sun and fun in Thailand. Their vacation package takes them to Pattaya City - a place known for its all-night parties and sex tourism - where the two attract a lot of attention from locals and Russian expats alike. When the women are killed by what appears to be a professional gunman, investigators must wade into the seedy underbelly of the city as they try to unravel the truth about the killings.

Two wealthy NYC seniors vanish during an Acapulco vacation among the elite. As police search intensifies, a relative arrives with their travel letters, providing the crucial breakthrough in solving their disappearance.

Kersten Kishnick and her boyfriend travel from Germany to Miami Beach, Florida, to enjoy a beautiful beachside vacation. During a night out on the town, the two get lost and a single gunshot in a sketchy part of town brings the good times to an end.

During a sunshine-filled mini vacation in New Mexico, a young teacher is reported missing by her boyfriend after a mystery man makes unwanted advances towards her in a popular bar.

An ailing young businesswoman is invited by her wealthy boyfriend to find a cure for her Lyme disease at an exclusive retreat in Camps Bay. But when Gaby Albam's body is found desecrated and mutilated, and Diego Novella found wandering stunned on the beach, South African authorities go on the hunt for a monster.

Lynn Ann Jackenheimer goes on a Fourth of July vacation with her two young children and her boyfriend to the Outer Banks of North Carolina, hoping for some quality family time after a rough period in her life.

25-year-old Christine Barbara Rudnicki disappears while walking along Tumon Bay in Guam. Her badly beaten body is later discovered, with clear signs of sexual assault. With at least two other rapes reported on the very same beach, authorities suspect there is a serial-rapist-turned-killer loose in their community. Can investigators uncover the killer's identity before he strikes again?

On the calm waters of Antigua and Barbuda, married adventure-seekers Kathy and William Clever, skipper Ian Cridland and deckhand Thomas Williams have only begun the grip of a lifetime - sailing from the UK to the eastern Caribbean. But their vacation in paradise is cut short when all four are found murdered on board their luxury yacht - the first murders on the tiny island in over 60 years. Could this be a robbery gone wrong, or was something more malicious afoot?

When young couple Lindsay Cutsall and Jason Allen fail to show up to an end-of-summer meeting at their whitewater rafting bible camp, police retrace their steps through Northern California, eventually discovering their bodies on a beach. But when the case goes cold, all hope of finding the killer is lost - until an unexpected break in the case more than a decade later.

Japanese businessman Kazuyoshi Miura takes his wife, Kazumi, to Los Angeles for a vacation; their relaxing holiday takes a terrible turn when the couple are robbed at gunpoint and shot, with Kazumi later dying from her injuries.

Artist Carol Schlosberg vanishes during a solo beach walk while vacationing with her boyfriend in Puerto Escondido, Mexico, sparking a search for her murderer.

Nathaly Salazar Ayala leaves her home in Spain to travel to Ecuador and begin the backtracking trip of a lifetime, venturing across all of South America. But she only gets as far as Cusco, Peru, before everyone back home stops hearing from her. She is soon believed to have been murdered, but as new information comes to light, everything is called into question

When two young women disappear on a dream backpacking trip through South America, only part of the mystery is solved when strange packages are found near a beach on Ecuador's south shore.

Bryanna Antone visits Hawaii with her mother and brother, Barbara and Ben, to celebrate her 25th birthday. After a night out with new friends, she fails to return to her hotel room and is found floating in the surf off a nearby beach. When her belongings begin to show up in unexpected places, investigators wonder if perhaps it wasn't an accidental drowning after all.

When Anne Neumann arrives in Coober Pedy - a stopover on her tour of the Australian Outback - she vanishes. It's the third case in as many years for local police, who search for links between their missing persons cases and a serial killer who preys on backpackers closer to Sydney, where seven more bodies are found.

Robert Stephenson and his girlfriend Nancy Johnson search the Big Island of Hawaii for the perfect secluded spot to camp out. But when an unknown assailant attacked from the surrounding trees, Robert is lured to his death. Can police catch a killer with so little to go on?

Chris Smith, a young successful businessman in Southern California, leaves it all behind to travel the world, leaving the street of his face-paced life behind him. But after months of sporadic contact via email, his family begins to wonder if something malicious is afoot. Is this a missing persons case, or a homicide? Can investigators solve the mystery behind his whereabouts before it's too late?