Warren Hull as The Spider / Richard Wentworth / Blinky McQuade

Mary Ainslee as Nita Van Sloan

Dave O'Brien as Jackson, Wentworth's Aide

Joseph W. Girard as Police Commissioner Kirk

Kenne Duncan as Ram Singh, Wentworth's Hindu Chauffeur

Corbet Morris as McLeod

Bryant Washburn as Westfall

Anthony Warde as Henchman Trigger

Harry Harvey as Stephen

Arthur Belasco as Butler

Stanley Blystone as Policeman

Lane Chandler as Police Lab Fingerprint Man

Stephen Chase as Jenkins, Wentworth's Butler

George Chesebro as Henchman

Steve Clark as Henchman Meeker

Ruth Findlay as Secretary

Jack Gardner as Poppy - the Bartender

Chuck Hamilton as Henchman Gunther

Tom London as Detective

George Magrill as Henchman

Joe McGuinn as Henchman

Irving Mitchell as Holden

Jack Mulhall as Detective Farrell

Frank O'Connor as Detective

Jack O'Shea as Armored Car Driver

Jack Perrin as Armored Car Driver

Lee Phelps as Police Officer Mulligan

Jack Roper as Detective

Cy Schindell as Henchman Brown

Charles Sullivan as Henchman Haney

Forrest Taylor as Voice of The Gargoyle

Ken Terrell as Henchman

Michael Vallon as Henchman

Dale Van Sickel as Henchman Cahill

Charles Miller as Mr. Van Sloan