A double helping of transmogrification with two classic versions of Robert Louis Stevenson's tale of science run amok, in which an ambitious doctor's experiments on himself turn him into a raving homicidal beast. The 1932 expressionistic spine-tingler, which influenced generations of creature-features, with a more obvious Freudian interpretation of the doctor's schizophrenia is the better of the two. The 1941 star-studded epic helmed by the legendary Victor Fleming (‘Gone with the Wind' and ‘The Wizard of Oz') is glossy but pales in comparison. Modern day fear-makers could learn a lot from these atmospheric chillers.