Paul Murton explores the Isle of Mull and its satellite islands to discover why they have become boltholes from the hustle and bustle of the modern world. He begins on the tidal island of Erraid, which inspired famous Scottish writer Robert Louis Stevenson, then hops over to Ulva, the final resting place of Lachlan MacQuarrie, one of the first governors of New South Wales. He then explores Mull itself, being given a whistlestop tour of the island by rally driver Louise Thomas, then travels to the mysterious little island of Inch Kenneth, where he hears the story of Nazi sympathizer Unity Mitford. He ends his tour at the remote Treshnish Islands, where he experiences a spot of 'puffin therapy'

A look at three different German U-Boat wrecks, including UC-66 - the first to be sunk by a plane and U480 - the world's first stealth sub

Armed with the latest undersea technology and personal testimony, divers board two doomed ships to discover what set them on the path to catastrophe

Survivors' stories and shipwreck investigators uncover how even the most powerful warships have had weaknesses which doomed them to the depths

Uncovering the remains of warships from the remote Pacific to the Atlantic, and revealing how the atom bomb changed the world for ever

Discover how the Americans eradicated the Japanese fleet, and how a Russian sub destroyed German liner Wilhelm Gustloff