Joe Dziemianowicz

The savage 1999 stabbing of a 20-year-old woman went unsolved until two more young women and a toddler were slaughtered by the same killer and the same knife.

When the beloved “first lady” of a church was strangled to death, investigators turned up infidelities, a secret cell phone, and a wall of silence from her congregation.

“In Ice Cold Blood” returns to Oxygen with new episodes, including one about two vicious Pennsylvania murders by the same killer that raised the specter of Dungeons & Dragons.

A shaky alibi and a $400,000 insurance policy made Melissa Oxley a prime suspect in her husband’s brutal shotgun murder.

A “Dateline” correspondent covered the tragic Maribel Ramos murder in 2014 and it’s still in his head — he tells why in Dateline: Unforgettable, a three-day special event airing on Oxygen.

Man’s best friend helped solve the case after Misty Morse was found dead in the Indian River.

When a respected Navy officer is strangled in a Florida motel, investigators search for a motive tied to his military past and current marriage.

A North Carolina mother’s death was ruled as natural causes, but a rumor of murder, a fistfight and a "surreal" exhumation proved otherwise.

Karyn Slover's body parts were found floating in bags in a central Illinois lake.

Brian Davis was shot dead along a Louisiana dirt road. Was it because of his philandering? Or finances?