This is one of the greatest lesser known horror films, a cult classic if you will. (ignore the raves of bela lugosi the same actor who plays dracula, hes hardly in the movie) Boris Karloff shows his great talents as a character actor, not like in Frankenstein where he hardly speaks a word. this is a great movie with a great ending. It builds tension and BOOM the ending is terrific. I highly recomend this and the original Robert Louis Stevensen short story. (Pardon all spelling)