After a mother is brutally murdered in her home, her husband and his bizarre alter ego are the prime suspects after he calls 911.

When 16-year-old Jason Sweeney disappeared, Philadelphia police connected him to an unidentified body. Jason's sister discusses this heinous murder.

When missing teenager Shafilea Ahmed's remains are found, her parents seem devastated. Years later, police unravel the truth: of abuse, family honour and murder.

A killer guns down a rapper outside a New Orleans Waffle House. A string of robberies in Arkansas baffles police until they use video to catch the robbers.

Rookie Alsatian Kane has a busy night shift with handler, PC Harris, going after a burglar. New handler Nikki investigates a bomb scare with explosives detection dog Oscar.

In 2009, a woman disappears and writes a social media message to say she is leaving. But, her friends and family are sceptical she would leave her children.

Pregnant Tiffinie Adams' body is found in a field and it catches the attention of the small town. Police use her social media to reveal the murderer.

24-year-old Rob Phillips arrives in Nashville with his new wife Kelli. They've moved across the country to launch Rob's country music career. But a late-night meeting turns deadly.

Explore the dark side of cities before and after the sun goes down, when the onset of darkness transforms the cityscape into a fantasy playground.

When missing teenager Shafilea Ahmed's remains are found, her parents seem devastated. Years later, police unravel the truth: of abuse, family honour and murder.

When Lesley Ford and four of her children disappear from a Cornish village, her husband claims they left him without a trace. But police are suspicious.

The tragic murder of a 14-year-old girl in Michigan leaves behind little physical evidence, forcing investigators to enter the digital world in search of clues.

When 26-year-old Erica Crippen Crosby disappears from her home in New Jersey, detectives must follow a digital trail to uncover the truth about what happened to her.

Detective Derrick Levasseur and Dr. Kris Mohandie investigate unsolved murder cases. They re-examine old evidence and new clues and try to finally solve these crimes.

In 2013, 51-year-old Robin Pope's body was washed ashore just one mile from her ex-husband's home. Did she drown, or was this a malicious act by her ex?

In 2013, beloved basketball coach Jimmy McClain is found brutally murdered. With no signs of forced entry, police fear that Jimmy knew the killer.

When Cody MacPherson moves to New Jersey seeking work, he disappears after a night of partying with a new group of friends. It becomes a homicide investigation.

A sniper shooting on an Alaskan highway leaves a young man dead and a community running scared. As one family grieves, another becomes hell-bent on revenge.

52-year-old Cole Cannon was found dead in his trailer when it caught fire in Lawrence County, Alabama. Cole's children discuss their search for the truth.

A night out turns disastrous for Amy Hall when she is introduced to a handsome new guy. Plus, Jodie is taken hostage by a person claiming to be a police officer.

Natasha is lured into a prostitution ring led by a violent pimp who won't let her go. Plus, Elsa is kidnapped from an orphanage and forced into a life of servitude.

A couple's fight reaches a tragic end when one of them is shot. A tape recorder that has captured the victim's final words becomes evidence in a murder trial.

Police chase a convoy of stolen luxury vehicles, a domestic dispute leads to an officer down, and an armed man shoots a cop, then steals his cruiser.