Secrets by the Bay
A San Diego mother suddenly vanishes in 2014; nearly two years later, her body is found in San Diego Bay, but medical examiners say she has only been dead for a month or two.
More from Season 12
Episode 1
The Investigation
A Philadelphia murder reveals decades of misconduct in the city's criminal justice system and raises questions about whether police caught the right person.
Episode 2
The Story of Somebody
When Courtney Copeland is shot and killed, his mother investigates whether police detectives did enough to try to solve the case.
Episode 3
Recipe for Murder
Keith Morrison reports on a dramatic undercover operation in Palm Beach, FL, to save a wife and mother who has no idea she is in danger.
Episode 4
The Case of the Missing D.A.
A district attorney in Pennsylvania went missing in 2005 under mysterious circumstances seven years after he investigated sex-abuse allegations made against Penn State football coach Jerry Sandusky.
Episode 5
After the Party
Four years after a 28-year-old dies after hosting a New Year's Eve party, a jury must decide if it was suicide or murder.
Episode 6
Robert Durst: The Lost Years
Friends of accused murderer Robert Durst talk about his arrest in New Orleans and his previous whereabouts over 30 years.
