Andrew McCulloch

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.

Three rich trustees are murdered - appearing as suicides. When a bus filled with orphans and three other rich trustees has an "accident," Colonel Bingham investigates.

In eighteenth century Scotland, during the Jacobite Rebellion, David Balfour claims his inheritance from his uncle who has him shanghaied on a ship where David meets fugitive Jacobite rebel Alan Breck.