John O'Keefe // 476

In May of 1991, a 34-year-old woman was found dead inside her car after it appeared to have veered into a ditch in her small Texas town. But investigators quickly zeroed in on a person of interest, believing she was murdered. With an arrest lagging and her family wondering if pol ...  Show more

In 1993, a Pennsylvania teacher began receiving threatening and incriminating letters, which she believed were coming from another teacher at her elementary school. As the letters became more violent and personal, investigators began to unravel a chilling and confusing story that ...  Show more

When an elderly Washington man dies from a fall, no one suspects his in-home caretaker—until her involvement in several other deaths is discovered. Suspicion over his death is raised as the remains of murder vict ...

Stephen Smith was found dead along a rural Hampton County road in the pre-dawn hours of July 8, 2015. His death came under mysterious circumstances, and remains unsolved. Stephen Smith's death ultimately was ruled a hit-and-run by a medical examiner, despite law enforcement sayin ...  Show more

Andrea Canning reports on the latest twists and turns in the case in which firefighters discovered a New Jersey man dead in a house fire, but an autopsy revealed he had been shot to death.

Andrea Canning and Josh Mankiewicz go behind the scenes of the making of this epis ...

On the morning of January 5, 1994, 27-year-old David Cox, a former Marine whose story inspired the movie A Few Good Men, was at home, anxiously awaiting news about a potential full-time job. But when his girlfriend, Elaine, returned home that evening, David was nowhere to be foun ...  Show more