 Mueller specializes in research on the human brain and obsessively conducts experiments on brain tissue, believing that a human brain can be maintained even after a man's death.He also believes that the knowledge contained in a deceased person's brain can be transferred to another person.Mueller is assisted in his attempts to prove his theory by another scientist, Patrick Cory (Richard Arlen), and his young Czechoslovakian-American ward, Janice Farrell (Vera Ralston).