In Warren, Michigan, two of the best and brightest, Danyna Gibson and Tanaya Lewis, compete for more than just grades and the results turn deadly.

An 18-year-old computer whiz disappears in a small Georgia town, and as the search intensifies, suspicion begins to fall on those closest to him.

A divorced mother of four vanishes. A seemingly typical missing persons case takes a stunning turn when family and friends give very different portraits of the woman.

When Alice Hufnagle is raped and murdered in 2002, police initially question her estranged husband. But, clues eventually lead to her colleague at a local pharmacy.

Akron police find Dereke Alexander badly injured, but he doesn't survive. The investigation leads officers to killers who hunted Dereke like prey.

Donovan Barfield is found dead and his apartment ransacked. Investigators uncover a diabolical plan of murder and robbery orchestrated by reckless killers.

When Michelle Warner vanishes without a trace from her apartment that she shares with her ex, police are left with a hunch that her past has reared its ugly head.

A high school cheerleader slips out her bedroom window after having an argument with her mother. Days later, her body is found floating down the river.

When a dancer is shot dead in her home, detectives try to figure out who had a motive to kill her. A cigarette found at the scene may provide answers.

When a mother disappears from her home, suspicion moves from one admirer to another. Will a surprise confession solve the mystery?

The bodies of a mother and daughter are found in Charlottesville. Investigators discover a secret online relationship that might be the key to finding the murderer.

A single mother is found dead in an apparent suicide. However, the absence of a gun at the crime scene leads police down a trail of dark secrets.

When Amy disappears, police have a suspect but no crime scene, no body and no evidence. It takes an unexpected informant to blow the case wide open.

A basketball star and his girlfriend disappear while sailing. Can investigators track down his brother, who's the only person who may know what happened?

The town of Malden, Massachusetts, is outraged after a child attending a family-run day-care makes sexual abuse claims. The allegations build with more children coming forward.

A young man is gunned down in his prime in front of scores of witnesses. But what should have been an open-and-shut case turns into a web of mystery.

In 2015, Tiffany Boyer is part of an edgy party scene in Albuquerque. When she goes missing, no one's talking, but a detective uncovers a cruel plot for revenge.

After sweet, insecure Kelly Bullwinkle is found dead in a remote area, investigators uncover a web of jealousy and deceit among friends.

Barbara Hefner's body is found floating in Folly Lake. On the hunt for her killer, officers uncover a secret affair before ultimately bringing justice home.

The body of Beverly Jackson is found in a car pulled from a canal. Police explore her relationships, but it will take a hotline tipster to track down her killer?

Steve and Amy investigate the unusual activity tormenting a husband-and wife team of paranormal investigators. Amy experiences something odd during the night.

Culross has a dark history, known for its ruthless witch hunts. The team contact the tortured souls of those wrongfully accused of dealing with the devil.

Edinburgh is widely considered to be the most haunted city in Europe. Buried beneath the cobbled streets of its Old Town lies the mysterious forgotten vaults.

Tim and Sapphire use hypnosis to uncover secrets from the Broussard family's past. But a sinister spirit attachment hinders the experiment.