
April 16, 1931 · 95 years old

When a bored Holmes eagerly takes the case of Gabrielle Valladon after an attempt on her life, the search for her missing husband leads to Loch Ness and the legendary monster.

During World War I, a German U-boat sinks a British ship and takes the survivors on board. After it takes a wrong turn, the submarine takes them to the unknown land of Caprona, where they find dinosaurs and neanderthals.

A Victorian era scientist and his assistant take a test run in their Iron Mole drilling machine and end up in a strange underground labyrinth ruled by a species of giant telepathic bird and full of prehistoric monsters and cavemen.

Aristocrat Julian Markham keeps his disfigured brother, Sir Edward, locked in a tower of his house. Sir Edward occasionally escapes and causes havoc around the town.