Circus performer Garth wears a magic symbol on his chest. The “death tattoo” allows him to use the power of hypnotism, but comes with a price. Its wearer is slowly driven insane; and after his death, the tattoo detaches from the body and goes searching for a new victim.; Puppet master Gravon and his puppet Koko are celebrities. His three assistants are jealous of his success, murder Gravon and go on stage themselves. Koko, however, changes into an avenging vampire puppet and drains the treacherous trio of their life blood.; Professor Janney invents a formula to bring dead matter to life. He tries it out in his home laboratory – with horrid success. His house becomes alive and keeps him prisoner. Janney slowly diminishes in size, ready to be absorbed by his murderous home.; Somewhere in Northern Canada, an expedition in search of Uranium comes across Viking artifacts. Eskimo guide Arnook warns the foreigners of the “Golden Sword of the Spirits”, but some men push on, discover a lost Viking ship and their doom.