WFTY-DT

When a couple is gunned down, a scrawled message leads police to suspect the crime may be related to drugs, even though there's no evidence the victims were involved in the drug trade.

A pursuit through a snowy mountain pass ends in a hailstorm of bullets; a motorcyclist hits 150 mph; a crime suspect tries to flee police in a school bus.

A serial killer gets attacked in a courtroom by the family of one of his victims; a World Trade Organization meeting in Seattle sparks riots; extreme skateboarders clash with authorities.

Vengeful lovers.

Forensic investigators hunt down killers who choose their victims at random and artfully cover their tracks.

The murder of Afrikka Hardy in 2014 turns out to be a catalyst for the investigation that ultimately exposes the crimes committed by Darren Deon Vann.

On August 26, 2011, Amanda Plasse became the victim of a brutal murder; it takes years before the culprit gets arrested, and her mother also fights to pass a law that prevents unauthorized sharing of crime scene photos.

In this case, Tiara Pool, a 21-year-old Navy wife from Jacksonville, Florida, meets David Sparre on Craigslist; their encounter takes a horrific turn when Sparre brutally stabs Tiara 89 times in her apartment in July 2010.

The disappearance of millionaire Frank Black.

Detectives wonder if Trenton Mallory's Trading Trent empire has become his downfall.

While her 10-year-old daughter listens upstairs, failed self-help guru Derek Medina shoots his wife during an argument, then casually posts pictures of her dead body on Facebook.

After a night of drinking, 45-year-old Ana Trujillo bludgeons her on-again-off-again lover Stefan Andersson to death with a blue suede stiletto shoe.

Former Deputy Sheriff of Colbert, Georgia, Tracy Fortson shoots her boyfriend Douglas Benton as he sleeps, then abandons his body in a cement-filled trough in the woods.

Nicole Abusharif, 26, murders her partner Rebecca Klein for the insurance money, then leaves her body in the boot of her car for a night of drinking with her young lover, Rose.

Authorities hunt for a mysterious stranger when Fredrick Banks is found slain in his garage.

The Klaus family home is burned down in the middle of the night.

What begins as a routine arrest of a man on outstanding warrants turns into a statewide manhunt, as the armed suspect tries to elude police.

A violent criminal runs from law enforcement.

Judith Mawson reveals what it's like to be married to a serial killer.

Louise Gallagher recalls her life after falling in love with a psychopath.

Melissa finds out that her father is a serial killer.

Barbara and her daughter get revenge on an Irish bigamist.

When Catherine Edwards misses a family outing, her parents check on her; at her apartment they discover Catherine's body; investigators follow dozens of leads as the alarmed community worries about a killer on the loose.

The sheriff's office respond to a 911 call from a distraught husband, who claims his wife has killed herself with a gun; once on the scene, detectives uncover chilling evidence that turns the case into a murder investigation.

Mahmuda Khatun had managed to escape one unhappy arranged marriage before she made a drastic plan to end the second.

Childhood sweethearts Lisa and Thomas Infante quickly grew apart, but their marriage continued to struggle on until Lisa made the fatal decision to leave.