An ex-Marine, a secret life and a missing girlfriend — was it murder? Peter Van Sant Investigates.

An ex-wife guns down her former husband — did she break after being abused, or was it cold-blooded murder?

A young woman, an alcoholic, thought she found help and a safe place — what she found was a killer. Maureen Maher investigates.

Todd Winkler, a former fighter jet pilot, claims he was defending himself when he stabbed his wife to death with scissors.

Former reality TV producer on trial for murdering his wife in 2010 speaks with “48 Hours” and turns the camera on himself for a look at life inside a Mexican…

A former middle school athlete accuses a teacher of abuse.

15-year-old boy goes to a dance and never returns. Teen killers keep a secret for 41 years – until one of them cracks. Richard Schlesinger investigates.

The investigation into the 2010 shooting death of Wall Street millionaire John Bender, who was killed in his exotic home in Costa Rica. His wife, Ann, is charged with the…

A report on a woman who was acquitted in the 1992 killing of her husband in Florida, but was charged with the attempted murder of her son in 2011 after…

An investigation into the death of an entrepreneur who was blown up in his car.

A businessman faces his third trial for the murder of his wife, after the first two were overturned on appeal.

An aspiring actress is brutally strangled. DNA was left all over the crime scene… leading police to a surprising suspect. Maureen Maher reports.