Police detective Bill Bannister (Kent Taylor), in charge of investigating the crime wave, is visited by his brother, a reformed criminal who will inform on Mortis.
Following the story are newspaper reporter Vicki Logan (Irene Hervey) and her photographer Happy Haskins (Richard Davies).
Starring: Featuring: With: Gang Busters is one of Universal's most elaborate serials, with many chase and thrill scenes expertly staged in outdoor locations.
Universal intended Gang Busters for adult audiences and possible weeknight showings, and staged the action as a straight crime drama.
As a publicity gimmick, Universal hired its "serial queen" of the 1910s, former action star Grace Cunard, to work in Gang Busters.