Perennial favorite Boris Karloff stars as a scientist who has created a helmet then when placed on the head of a subject can transfer their brainwaves onto a graph. Kind of like a lie detector graph. He discovers that women have stronger waves of brain energy then men. He demonstrates this to a room full of fellow scientists and friends, by using his wife an an example. Her brain waves are indeed stronger and much to the amazement of his skeptical friends the graph on the wall jumps up and down! Later after his wife dies in a car accident, Boris returns to his lab and angrily throws switches and discovers that his wife's energy has returned to the lab! He now joins up with a spiritualist and a brutish Igor type to further his experiments and try and contact his beloved wife from beyond the grave. Holds up quite well today. The seance table surrounded by corpses, the swirling spirits appearing as a funnel of energy and King Karloff in all his maniacal glory. My only complaint is the short running time of only 65 min. The last 5 minutes look rushed but still the movie wraps up nicely. And here is the Great one sheet.