
Plot
David Marshall Williams is sent to a prison farm where he works in the tool shop and eventually develops the precursor of the famous M-1 Carbine automatic rifle used in World War II.
Trailer
Cast

James Stewart
Marsh Williams

Jean Hagen
Maggie Williams

Wendell Corey
Capt. H.T. Peoples

Carl Benton Reid
Claude Williams

Paul Stewart
'Dutch' Kruger

Otto Hulett
Mobley

Rhys Williams
Redwick Karson

Herbert Heyes
Lionel Daniels

James Arness
Leon Williams

Porter Hall
Sam Markley

Fay Roope
District Attorney

Ralph Dumke
Andrew White

Leif Erickson
Feder

Henry Corden
Bill Stockton

Howard Petrie
Sheriff

Stuart Randall
Tom Vennar

Dan Riss
Jesse Rimmer

Robert Hyatt
David Williams (as Bobby Hyatt)

Marlene Lyden
Mary Eloise Williams (uncredited)

Lovyss Bradley

Frank Richards
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