This is a one of a kind--combination horror/gangster! Karloff (who's just incredible) is bought back from the dead after being wrongfully executed and takes revenge on those who set him up. It's basically a gangster film until the last half hour--then the scary stuff kicks in. The film is VERY short (70 minutes) and moves quickly. It's intelligent (although bringing a person back from the dead after they've been electrocuted is a stretch!), very well-directed (effective use of shadows and camera angles) but the main reason to watch is Karloff. He never received the attention he deserved because he made horror films, which are still looked down upon. He was a wonderful actor and in this movie gives one of his best performances ("The Black Room" is probably THE best he ever gave). Just check out his expression after he "kills" the men he goes after. Excellent job. A perfect "B" movie. Don't miss it! I don't believe this is on video (I saw it on TCM), so if you get a chance, SEE IT! You won't be disappointed!