While staying in Rome, american newspaperman Wilson follows a beautiful stranger through the ruins and enters the "doorway to yesterday". He finds himself in ancient Rome and (at the command of Nerissa) has to battle a gladiator. Wilson wins and can return to the present. Nerissa follows and claims his body in an airplane crash.; Treasure hunter Kramer gets pulled into an underwater world where ghost pirates dwell. The pirate's girl shows him a way out and Kramer can escape. He settles down and gives up treasure hunting for good.; Landowner Sir Edward drives a family off his property. Leaving they curse him as his whole family line has been cursed. Sir Edward begins fantasizing a blazing gallows in the sky no one else but him is able to see. The apparition transports him to the hanging tree, where he is found dead.; A party of explorers discovers an underground world populated by cavemen and dinosaurs. They manage to defeat beasts and primitives and take a raft-ride on an underground river back to the outside world.; "Shipping off the coast of England in the late 19th century was a risky and perilous task..." The ghost of a young woman saves ships by lighting a lantern at night and signaling danger.; "Mountain climbers from all parts of the world make yearly trips to Switzerland to climb its most famous mountain, the Matterhorn..." A young american loses his guide on the way up, but returns safely joining a group of others. These men have been missing for 20 years and are ghosts.