"Tom King Jr. seeks to discover who murdered his father, a Texas Ranger; the trail leads to a network of Axis spies."
Sammy Baugh
as Ranger Tom King Jr.
Neil Hamilton
as John Barton / Felix Hauptman
Pauline Moore
as Sally Crane
Duncan Renaldo
as Lt. Pedro Garcia
Charles Trowbridge
as Robert Crawford
Herbert Rawlinson
as Col. Lee Avery
Frank Darien
as Pop Evans
Rudolph Anders
as His Excellency
Monte Blue
as Capt. Tom King Sr.
Stanley Blystone
as A.J. Lynch
Kermit Maynard
as Ranger Wichita Bates
Roy Barcroft
as Ross
Kenne Duncan
as Nick
Jack Ingram
as Shorty
Robert Barron
as Blake
Frank Bruno
as Cole
Monte Montague
as Dade
Joseph Forte
as Prof. Nelson
Lucien Prival
as Zeppelin Captain
George Allen
as Truck Thug
Hooper Atchley
as Druggist Porter
John Bagni
as Henchman Slater
Bobby Barber
as Eduardo
George Barrows
as Dirigible Lieutenant
Earle D. Bunn
as Dirigible Heavy
Forrest Burns
as Gate Guard
Ed Cassidy
as Sedley
Jack Chapin
as Stub Latner
Tommy Coats
as Rancho Thug
Iron Eyes Cody
as Carlos
Eddie Dew
as Dam Guard Thomas
James Fawcett
as Truck Heavy
Bud Geary
as Henchman Cramer
Alan Gregg
as Carl
Paul Gustine
as Military Officer at Airfield
Herman Hack
as Shootout Thug
Henry Hall
as Dr. L.H. Bowen
Chick Hannan
Barry Hays
Howard Hughes
as Johnny Logan
John James
as Truck Driver Dave
Bob Jamison
as Dam Guard
Jerry Jerome
as Ed
Ray Jones
as Henchman
William Kellogg
as Hank Breen
Bert LeBaron
as Thug on Dock
Alex Montoya
as Bartender
Pat O'Shea
Michael Owen
as Ronnie Nelson
Otto Reichow
as Zeppelin Radioman
Robert Robinson
Buddy Roosevelt
as Ranger Sherwood
Ernest Sarracino
as Cowan
Dick Scott
as Oilfield Thug in Overalls
Lee Shumway
as Coach
Dick Simmons
as Red Cameron
Al Taylor
as Henchan Dude Ward
Carlie Taylor
Forrest Taylor
as Plant Employee
Ken Terrell
as Scaffold Thug
Charles Thomas
Max Waizmann
as Gus
Slim Whitaker
as Cantina Thug
Bud Wolfe
as Derrick Heavy
William Lively
Director
Joseph F. Poland
John English
William Witney
Hiram S. Brown Jr.
Producer
Ronald Davidson
Screenplay
Norman S. Hall
Joseph O'Donnell
Merlyn Nelson
Stunts
Bill Wilkens
David Sharpe
Edward Todd
Editor
Theodore Lydecker
Special Effects
Duke Green
Bob Mark
Makeup Artist
Howard Lydecker
Loren Riebe
Cy Slocum
Duke Taylor
William P. Thompson
Tom Steele
Joe Yrigoyen
Reggie Lanning
Director of Photography
Cy Feuer
Original Music Composer