When a man in a trance gets into an astral duel with another, the strain proves too much for his body.; A coward cooks up a scheme to swindle two old men out of paying for a fake chariot of Odin, but when his workers dig in another spot in the cave where he planted the fake chariot, they uncover the real thing and it takes him to Valhalla to fight battles for eternity.; A scientist invents an invisibility serum that only renders the one who imbibes it invisible to himself.; When a scientist invents a device that allows an image to be projected into the past that can retrieve objects, a crook uses it to pick up a lighter with his initials that he dropped at the scene of his robbery, but he gets arrested anyway because a detective also used the machine and observed him in the act of his crime.; A murderer meets his end in the gas chamber still thinking that he has fooled everyone and committed the perfect crime.; A man who goes to mediums looking to speak to a non-living relative thinks the swami who conjures a spirit is fake because the spirit can answer none of his questions. Only many years later does he learn that his experience with the swami was genuine as he is introduced to the spirit's likeness, a relative who had not been born yet, and thus was unable to answer any of his questions.