Jeremy Wade reveals details of a high-speed chase between a narco sub and the U.S. Coast Guard; with the help of declassified files and cutting-edge military technology, experts investigate if they've found Pablo Escobar's lost treasure.

Jeremy explores the loss of a NASA space capsule deep in the Atlantic. And, what is the underwater secret behind ship disappearances in the Devil's Sea?

Jeremy Wade explores a new theory that could explain the mystery surrounding what happens in the world's most infamous stretch of water.

Jeremy Wade explores the sinking of the mighty SS Fitzgerald. Can new discoveries finally tell us what led to one of the biggest catastrophes on the Great Lakes?

When a mummified body is discovered on an abandoned boat, investigators struggle to explain where it came from, so Jeremy Wade sets out to reveal what happened.

Jeremy Wade explores how fresh insights into ancient boat building techniques shed new light on the truth behind the biblical story of Noah's flood.

Jeremy Wade reveals the new deep-sea discoveries that might prove the existence of the infamous giant squid.

Jeremy explores a 140-year-old wreck that has been perfectly preserved at the bottom of the Great Lakes. Plus, the dark secret buried inside a toxic Nazi submarine.

Jeremy Wade explores a revolutionary technique that could identify the Loch Ness Monster. Plus, how did a man survive for several days trapped in a shipwreck?

Jeremy Wade explores unsolved mysteries of the oceans, from ships that disappeared without a trace to lost treasure and unexplained scientific phenomena.