Daytona Beach, Florida. In May 1993, while on spring break with three friends in Daytona Beach, 20-year-old Christine Lazzaro is spotted leaving a nightclub with an unknown male. Nine hours later, she turns up shot to death at the side of a road.

July 9th, 2018, police receive a distressing call from a woman claiming she and her friends have been kidnapped and terrorized at a Travelodge. One of them has sustained a fatal gunshot wound.

High-profile politician Kathy Augustine married nurse Chaz Higgs after a whirlwind romance. They were an unlikely match, and when their marriage hit the rocks, Chaz decided to use his medical training to commit an undetectable crime.

When a welfare check on a 65-year-old man reveals he's been brutally killed and robbed, Tulsa Homicide must delve into the secret parts of his life for answers.

The key to solving the toughest homicides lies somewhere within the final 24 hours of the victim's life. This true-crime documentary series follows investigators as they piece together events.

On the sub-zero Canadian prairie, Royal Canadian Mounted Police discover a woman inside her hoarder home, a bloody ice-axe beside her. Her adult nephew lies frozen in the bed of his pick-up. Now, it's up to the Mounties to track down their killer.

The key to solving the toughest homicides lies somewhere within the final 24 hours of the victim’s life. This true-crime documentary series follows investigators as they piece together events during this critical window.

When Florida invesigators find a retired Marine in his home—beaten, then slain by a shotgun blast—their suspect lists grows from his estranged son to a mystery woman he’d only just met, then to a possible serial killer.

When young couple Lindsay and Jason 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.

After a no-show spring break in Miami, the search is on for 24-year-old nursing student Tamika Huston. And when her abandoned car is found just miles from her home in South Carolina, family and friends suspect the worst.

On March 19, 2017, police responded to reports of a gunshot at the Surf Motel in Sacramento, California, where they discovered 53-year-old Leonora Montoya dead from a single execution-style gunshot wound to the head.

In the 2008 murder case of Ben Oxley in Minden, Nevada, a key development was the involvement of his ex-wife, Dawn Oxley. Initially, the focus was on James Matlean, Ben's former friend, who was charged with the murder.

At Delmenhorst Hospital, Germany, administrators notice death rates in their intensive care unit have risen sharply. Suspicions fall on Nurse Niels Hogel who turns out to be Germany's most prolific murderer since WW2.

Eleven vulnerable and elderly residents of a Sydney care home perish as the result of a destructive fire. Nurse Roger Dean aids the evacuation. But his role in this devastating incident is much more than just a helping hand.

Aliny and Ricardo Godinho had four children and a relationship history that spanned 17 years. While Aliny put her kids at the centre of everything she did, for Ricardo they were a morbid obsession, and one that would lead to a shocking, brutal crime.

Denise Williams was devastated when her husband Mike disappeared on a hunting trip. He was feared drowned. But Mike’s mother Cheryl didn’t buy it, and after years of relentless campaigning, she finally uncovered the truth about her son’s death.

When two teenage classmates in Northern California go missing within weeks of each other, their mothers struggle to get police to take the situation seriously.

Investigators trying to determine who shot and killed a young mother in Ohio are tipped off by a surprising piece of digital evidence. From there, they unravel a twisted story of stalking and social media catfishing.

Monica Hoffa finishes a shift and heads out into Seminole Heights to meet a friend. She’s pregnant, excited for the future, walking alone through a well-lit area. At 8:05 PM, a man emerges. It’s Howell Donaldson III, he shoots her three times.

Kylen and Crystal spend the evening playing pool at a bar with friends. But there’s tension—they're anxious about a strange man who had howled at them near their campsite. The truth emerges months later. Their killer had been hiding in plain sight.

Fifteen-year-old Loren Leslie tells friends she’s going to meet someone new. She sneaks out to see Cody Legebokoff, they've been chatting with online. They drink, drive, and head into the woods. By 9:00 PM, Loren grows uneasy as Cody turns violent.

In the 2008 murder case of Ben Oxley in Minden, Nevada, a key development was the involvement of his ex-wife, Dawn Oxley. Initially, the focus was on James Matlean, Ben's former friend, who was charged with the murder.

Investigative series examining murder cases told through the personal experience of retired Colorado detective Lieutenant Joe Kenda.

Investigative series examining murder cases told through the personal experience of retired Colorado detective Lieutenant Joe Kenda.

On March 19, 2017, police responded to reports of a gunshot at the Surf Motel in Sacramento, California, where they discovered 53-year-old Leonora Montoya dead from a single execution-style gunshot wound to the head.

With the help of digital forensics, authorities are able to debunk the alibi of one of the last people to see a 24 year old missing jogger in rural Arkansas, making him the primary suspect in her murder.

After an argument in his home, a man answers a knock at his front door and is suddenly shot and killed.

Investigative series examining murder cases told through the personal experience of retired Colorado detective Lieutenant Joe Kenda.

Investigative series examining murder cases told through the personal experience of retired Colorado detective Lieutenant Joe Kenda.

In the 2008 murder case of Ben Oxley in Minden, Nevada, a key development was the involvement of his ex-wife, Dawn Oxley. Initially, the focus was on James Matlean, Ben's former friend, who was charged with the murder.

Eleven vulnerable and elderly residents of a Sydney care home perish as the result of a destructive fire. Nurse Roger Dean aids the evacuation. But his role in this devastating incident is much more than just a helping hand.