A beloved Staten Island teacher is found dead in the home she shared with her husband; an unknown number in her cell phone leads investigators to ultimately unearth her killer.

When a young pregnant mother goes missing in Virginia, her family embarks on a search, but the case goes cold. Years later, investigators find a woman who may hold the key to solving the case.

A young father's murder at work leads investigators to deep secrets about sex, friendship, religion and family.

Nearly 40 years after young wife and mother Cathy Krauseneck is found murdered with an axe in her upstate New York home, a new team of investigators joins the cold case to uncover the killer.

When a Colorado mother vanishes, the detective discovers a connection to a previous assault.

Detectives search for answers after Annastasia Hester is stabbed to death in Portland, Oregon.

The wife of a college professor and heir of an oil empire is found murdered in her home.

A serial killer murders several people while working as a confidential informant for the FBI.

Twenty seven-year-old Jonathan Crews dies mysteriously in his Texas apartment.

The discovery of a young woman's body in rural Texas sparks a long, multi-state investigation.

A quiet North Dakota college town is left in fear after student Mindy Morgenstern is found dead.

The investigation into the mysterious disappearance of a Canadian man sparks an international manhunt for an elusive killer with multiple...

A week before a banker's divorce reaches a settlement, an ex-con says he was hired for murder.

Chilling details come to light in an alleged murder-for-hire plot targeting a former NYC police officer's husband. The officer's...

A massive manhunt ensues after Lois Riess murders her husband in Minnesota and flees to Florida, where she kills and steals the identity...

Decades after Susan Smith confessed to drowning her two small sons in South Carolina, she advocates for parole. Her ex-husband speaks out...