The Invisible Killer

Sue Walker

Lt. Jerry Brown

Det. Sgt. Pat Dugan

Arthur Enslee

Vani Martin

Lefty Ross

Dist. Atty. Richard Sutton

Mr. Cunningham

Gloria Cunningham

Llewellyln Worcester, Sutton's Valet

Tyler, Sutton's Secretary

Squint, the Croupier

Plainclothesman (uncredited)

Gambler (uncredited)