"The Wrecker wrecks trains on the L & R Railroad. One of his victims is Larry Baker's father. Baker wants to find the evildoer, among a host of suspects, but it will be difficult since the Wrecker can disguise himself to look like almost anyone"
John Wayne
as The Air Pilot
Tully Marshall
as The Railroad Manager
Conway Tearle
as The Railroad Attorney
Shirley Grey
as The Secretary
Edmund Breese
as The Secretary's Father
Lloyd Whitlock
as The Air Line Manager
Al Bridge
as The Station Agent
Matthew Betz
as The Engineer Jordan
Joseph W. Girard
as The Railroad Detective
James P. Burtis
as The Railroad Detective's Assistant
Ernie Adams
as Barney
Charles King
as Mike
J. Farrell MacDonald
as Jim Baker
Al Ferguson
as Sandy
Glenn Strange
as Jim
Fred 'Snowflake' Toones
as Sam (uncredited)
Yakima Canutt
as Henchman
J.P. McGowan
Director
Armand Schaefer
Colbert Clark
Story
Barney A. Sarecky
Wyndham Gittens
Screenplay
Harold Tarshis
Nat Levine
Producer
George Morgan
Stunts
Lee Zahler
Original Music Composer
Ernest Miller
Director of Photography
Carl Wester
Ray Snyder
Editor