Stars Kent Taylor, Irene Hervey, Robert Armstrong and Ralph Morgan. Here's a overlooked 1940's serial with some horror/sci-fi elements. Produced by Universal in their 1940s heyday, this features a mad scientist (Ralph Morgan of THE MONSTER MAKER, CONDEMNED TO LIVE, NIGHT MONSTER) who has his secret labs below the subway systems! His group of dead gangster-zombies cause general mayhem and are stealing the city blind. Morgan's army of gangster suicide victims is called "The League of Murdered Men!" The good guys are Kent Taylor and Robert Armstrong (Denham of KING KONG fame).
A thirteen chapter cliffhanger. Mastered and restored in 4K from 35mm.