"The Eagle uses sky writing to make threats against a corporation. Nathan Gregory owns a travelling fairground and is thought to be the Eagle. Craig McCoy is a pilot who goes looking for the Eagle when Gregory turns up missing."
John Wayne
as Craig McCoy
Dorothy Gulliver
as Jean Gregory
Walter Miller
as Danby
Kenneth Harlan
as Ward
Richard Tucker
as Major Evans
Pat O'Malley
as Ames
Edmund Burns
as Clark
Yakima Canutt
as Boyle
Roy D'Arcy
as Gardner
Billy West
as Bob the Clown
Edward Hearn
as Colonel Nathan Gregory
Lloyd Whitlock
as Green
'Little Billy' Rhodes
as The Midget
Ivan Linow
as Henie the Strong Man
James Bradbury Jr.
as Henry the Ventriloquist
Ernie Adams
as Pat Kelly
Bud Osborne
as Tim Moore
Monte Montague
as Callahan
Murdock MacQuarrie
as Frang the Watchman
Ford Beebe
Director
Nat Levine
Producer
Benjamin H. Kline
Cinematography
Victor Scheurich
Ray Snyder
Editor
Wyndham Gittens
B. Reeves Eason
Writer
Colbert Clark