The House of Frankenstein

Dr. Gustav Niemann regales his hunchbacked cellmate, Daniel, with tales of how he had nearly put the brain of a human into a dog. This gives Daniel hope; if brain switches are possible, that would mean that his own brain could be removed and placed into a better body than the misshapen one that he is now trapped in. A thunderstorm destroys their prison, and they escape to find refuge in the company of a traveling carnival. The carnival owner has possession of the skeleton of Count Dracula, who can be revived by removing the wooden stake from his heart. Niemann has the hunchback kill the owner, and then resurrects Dracula to kill those who had sent him to prison. But Dracula has other plans. Later, Niemann and Daniel encounter a Gypsy caravan, where Daniel falls in love with a beautiful Gypsy girl. She travels with them to Frankenstein's ruined house, where they find Frankenstein's Monster and the Wolf Man frozen in ice. Niemann thaws them out, finding the Monster fairly inert and the Wolf Man changed back into the tormented Larry Talbot. To Daniel's dismay, the Gypsy girl falls in love with Talbot, unaware of his lupine alter ego. Meanwhile, Niemann promises both the hunchback and Talbot new bodies. But as usual, the mad doctor cannot be trusted.