Kent Taylor as Det. Lt. Bannister

Irene Hervey as Vicki Logan

Ralph Morgan as Dr. Clayton Maxton

Robert Armstrong as Det. Tim Nolan

Ralf Harolde as Halliger

William Haade as Mike Taboni

Richard Davies as Happy Haskins

Joseph Crehan as Police Chief Martin O'Brien

George Watts as Mayor Hansen

John Gallaudet as Mr. Wilkerson

Victor Zimmerman as Ted Lane, alias Mr. Bernard

George J. Lewis as Joey Morrison, alias Mason

John Berkes as Mr. Grubb

Pat O'Malley as Police Chemist Crandall

Edward Emerson as Frenchy Ludoc

Riley Hill as Jim Bannister