Put on your trench coat and join Robert Stack in a never-ending marathon of UNSOLVED MYSTERIES. This series covers crimes, tales of lost love, unexplained history and paranormal events.

Unsolved Mysteries • 2:47 PM UTC • 4h

Unsolved Mysteries With Robert Stack

S1, EP15 "Episode 15"

An exploration of Bigfoot II, threats and harassment, murder by arson, and more.

Unsolved Mysteries • 6:47 PM UTC • 5m

Unsolved Mysteries With Robert Stack

S1, EP15 "Episode 15"

An exploration of Bigfoot II, threats and harassment, murder by arson, and more.

Unsolved Mysteries • 6:52 PM UTC • 1h 6m

Unsolved Mysteries With Robert Stack

S3, EP18 "Episode 18"

Scared to Death; Texas UFO; Butch Cassidy; Sibling Search & UD.

Unsolved Mysteries • 7:58 PM UTC • 1h 56m

Unsolved Mysteries With Robert Stack

S4, EP14 "Episode: 14"

Larry's last race; "'Til Death Do Us Part;" millionairess murder; dances with Moomess.

Unsolved Mysteries • 9:54 PM UTC • 1h

Unsolved Mysteries With Robert Stack

S2, EP14 "Episode 14"

An exploration of Bigfoot II, threats and harassment, murder by arson, and more.

Unsolved Mysteries • 10:54 PM UTC • 52m

Unsolved Mysteries With Robert Stack

S3, EP15 "Episode 15"

Teen Tragedy; Update: Jim and Tammi; State Department Murder; Lost Adams Diggings.

Unsolved Mysteries • 11:46 PM UTC • 59m

Unsolved Mysteries With Robert Stack

S2, EP4 "Episode 4"

Bad chief; locust grove; update on "Pizza Man" and "Perpetual Partners."

Unsolved Mysteries • Mar 19, 2025 • 2h 1m

Unsolved Mysteries With Robert Stack

S3, EP13 "Episode: 13"

This episode includes: Missing Medic & UD, Update: Serial Molester, Killer Casanova & UD and Vancouver Lights.

Unsolved Mysteries • Aired Mar 15, 2025 • 1h 1m

Unsolved Mysteries With Robert Stack

S1, EP1 "Episode 1"

This episode includes: Thumbs & UD, Update: Marsh, Conway, Honeymoon Bones and Dottie Caylor.

Unsolved Mysteries • Aired Mar 15, 2025 • 1h 6m

Unsolved Mysteries With Robert Stack

S3, EP18 "Episode 18"

Scared to Death; Texas UFO; Butch Cassidy; Sibling Search & UD.

Unsolved Mysteries • Aired Mar 15, 2025 • 1h 3m

Unsolved Mysteries With Robert Stack

S4, EP3 "Episode: 3"

"Who's Tyler?;" Maloney's mickey; shroud of Turin; road map clues.

Unsolved Mysteries • Aired Mar 15, 2025 • 1h 1m

Unsolved Mysteries With Robert Stack

S1, EP23 "Episode 23"

Motorcycle Mom & UD; Update: Ready Teller Robbery; White Bird; Strychnine Death; Missing Mariners.

Unsolved Mysteries • Aired Mar 15, 2025 • 2h 55m

Unsolved Mysteries With Robert Stack

S3, EP2 "Episode: 2"

This episode includes: Bermuda Triangle, Prison Mom & UD, Heck He's Gone & UD and Scare Tactics.

Unsolved Mysteries • Aired Mar 15, 2025 • 52m

Unsolved Mysteries With Robert Stack

S4, EP20 "Episode: 20"

An exploration of Bigfoot II, threats and harassment, murder by arson, and more.

Unsolved Mysteries • Aired Mar 15, 2025 • 1h 1m

Unsolved Mysteries With Robert Stack

S2, EP5 "Episode 5"

An exploration of Bigfoot II, threats and harassment, murder by arson, and more.

Unsolved Mysteries • Aired Mar 15, 2025 • 58m

Unsolved Mysteries With Robert Stack

S1, EP21 "Unsolved Mysteries With Robert Stack"

Phony California folk healer Jorge Cortez; clumsy Florida bank robber; search for the killers of Montana resident Dexter Stefonek; Arizona police seek escaped convict Michael Mohon.

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