A gang of criminals, which includes a piano player and an imposing former convict known as 'Gruesome', has found out about a scientist's secret formula for a gas that temporarily paralyzes anyone who breathes it. When Gruesome accidentally inhales some … Boris Karloff, Ralph Byrd, Anne Gwynne, Edward Ashley, June Clayworth, Lyle Latell, Tony Barrett Added on Amazon Prime 2023-02-07.