The first sequel to the Claude Rains classic, while more modestly scaled than its predecessor, still receives a first-class treatment from director Joe May and, in many instances, surpasses the visual magic of the original. Vincent Price replaces Rains and gets his first starring role as a man condemned to hang for a murder he didn't commit. He persuades the brother of the man who created the invisible serum to give him a dose so he can find the real killer. Price's rich theatrical voice assures his invisible man has a credible presence in a diverting tale filled with comedy, drama and eerie moments.

The owner of a coal mining operation, falsely imprisoned for fratricide, takes a drug to make him invisible, despite its side effect: gradual madness.