Full Credits
18 members

Warren Hull
The Spider / Richard Wentworth / Blinky McQuade

Iris Meredith
Nita Van Sloan

Richard Fiske
Jackson

Kenne Duncan
Ram Singh

Forbes Murray
Police Commissioner Stanley Kirk

Marc Lawrence
Steve Harmon

Charles C. Wilson
Chase
Eugene Anderson Jr
Johnnie Sands

Ann Doran
Mason's Secretary

Paul Whitney
Gray
Beatrice Curtis
Kate Sands
Gordon Hart
J. Mason

Byron Foulger
Allen Roberts

Donald Douglas
Jenkins

John Tyrrell
Henchman Grafton
Henry Taylor
Wilson (uncredited)

Lee Shumway
Police Sergeant (uncredited)
Harry Cornell
Brownie (uncredited)
16 members
James W. Horne
Director
Ray Taylor
Director
Robert E. Kent
Screenplay
Mart Ramson
Screenplay
Basil Dickey
Screenplay
George H. Plympton
Screenplay
Jack Fier
Producer
Allen G. Siegler
Director of Photography
Richard Fantl
Editor
Chuck Hamilton
Stunts
Tom Steele
Stunts
Dave O'Brien
Stunts
George DeNormand
Stunts
Francis Walker
Stunts
Bud Geary
Stunts
Duke York
Stunts