Jeremy Wade investigates if one of the Bermuda Triangle's most infamous disappearances was part of a conspiracy by a secret agent at war with the United States, and using technology, experts reveal if it vanished for far stranger reasons.

A sunken Nazi submarine packed with toxic cargo is a ticking time bomb that could put the whole world at risk; Jeremy Wade reveals the sub's top-secret mission it was on when it sank and how experts keep it from sparking a global catastrophe.

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

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.

When a mummy is discovered on an abandoned boat, investigators struggle to explain where it came from; Jeremy Wade reveals what happened and the strange forces to blame for this mysterious phenomenon on the high seas.

Newly declassified files reveal the details of an unexplained encounter between the US Navy and UFOs that seem to defy the laws of physics; using cutting-edge tech, Jeremy Wade investigates the truth behind this alien mystery.