The Sinister Disappearance of Jimmy Hoffa
Episode: 4x01 | Airdate: Jul 13, 2018 (24 min)
Season Premiere. What really happened to this famed Mob figure?
Episodes
The Bizarre Collar Bomb Bank Robbery
Episode: 4x02 | Airdate: Jul 20, 2018 (28 min)
This deadly bank robbery was just the beginning.
The Mysterious Death Of The Eight Day Bride
Episode: 4x03 | Airdate: Jul 27, 2018
Accidental death, or deadly love triangle?
The Incredible Alcatraz Prison Break
Episode: 4x04 | Airdate: Aug 3, 2018 (23 min)
Four men, an infamous island prison, and one daring plan. But what happened next?
The Covert Poisoning of an Ex-Russian Spy
Episode: 4x05 | Airdate: Aug 10, 2018 (21 min)
An ex-spy is murdered with an unusual poison. Was it an enemy, or his former employers?
The Odd Death of Charles C. Morgan
Episode: 4x06 | Airdate: Aug 17, 2018 (17 min)
Secret agent, criminal or something more sinister?
The Bizarre Disappearance of Bobby Dunbar
Episode: 4x07 | Airdate: Aug 24, 2018 (25 min)
A boy is lost... and found. Or is he?
The Treacherous Treasure Hunt of Forrest Fenn
Episode: 4x08 | Airdate: Sep 7, 2018 (31 min)
In this season finale, Ryan and Shane search for real-life buried treasure.
The Chilling Black Dahlia Murder Revisited
Episode: S04 Special | Airdate: Jan 11, 2019 (26 min)
Watch Ryan & Shane uncover more details of the Black Dahlia as they revisit that case.
Specials
Postmortem: Forrest Fenn - Q+A
Episode: S04 Special | Airdate: Sep 12, 2018 (22 min)
Real treasure hunters don't use metal detectors.
Postmortem: Bobby Dunbar - Q+A
Episode: S04 Special | Airdate: Aug 29, 2018 (17 min)
Why use dynamite?
Postmortem: Charles C. Morgan - Q+A
Episode: S04 Special | Airdate: Aug 22, 2018 (15 min)
What was the significance of the mysterious Bible verse?
Postmortem: Litvinenko - Q+A
Episode: S04 Special | Airdate: Aug 15, 2018
How much polonium is too much?
Postmortem: Alcatraz - Q+A
Episode: S04 Special | Airdate: Aug 8, 2018 (16 min)
What if the escapees dumped their belongings on purpose?
Postmortem: Eight Day Bride - Q+A
Episode: S04 Special | Airdate: Aug 1, 2018 (22 min)
Could Christina's suicide notes have been faked?
Postmortem: Collar Bomb - Q+A
Episode: S04 Special | Airdate: Jul 25, 2018 (16 min)
Why kill the pizza guy?
Postmortem: Jimmy Hoffa - Q+A
Episode: S04 Special | Airdate: Jul 18, 2018 (18 min)
What if Jimmy went into Witness Protection? And can we get a new name for the in-betweeners?
Unsolved Almost 70th Episode Retrospective
Episode: S04 Special | Airdate: Jul 15, 2018 (28 min)
It's an Unsolved extravaganza as the boys relive some of their biggest cases.