The 1942 Gang Busters serial made by Universal Studios is based on the radio series Gang Busters.
The city is terrorized by a crime wave masterminded by the elusive, soft-spoken Professor Mortis (Ralph Morgan). Police detective Bill Bannister (Kent Taylor), his partner Tim Nolan (Robert Armstrong), and police chief Martin O'Brien (Joseph Crehan) investigate the activities of Mortis and his gang, and discover that the crimes were all perpetrated by men who had died some time ago. Following the story is journalist Vicki Logan (Irene Hervey) and her photographer 'Happy' Haskins (Richard Davies).
Gang Busters is one of Universal's most elaborate serials, with many chase and thrill scenes expertly staged in outdoor locations. The directors were Ray Taylor, veteran director responsible for many hit serials, and Noel M. Smith, former silent-screen director who specialized in fast action (Smith directed many of Larry Semon's action-filled comedies of the 1920s).
This is mostly a crime film but contains a small science fiction element. The villains, The League of Murdered Men, are all dead criminals killed and revived by Professor Mortis using his own mysterious poison.(Source: wikipedia.org)