Boris Karloff stars as the screen's most memorable monster in what many consider to be the greatest horror film ever made. Dr. Frankenstein (Colin Clive) dares to tamper with the life and death by creating a human monster (Karloff) out of lifeless body parts. It's director James Whales' adaption of the Mary Shelley novel blended with Karloff's compassionate portrayal of a creature groping for identity that makes Frankenstein a masterpiece not only of genre, but for all time.