"Tommy McCoy grew up poor and scrappy. As a young man he discovers that he can fight with his powerful right arm. He becomes successful at boxing, however he has an alcoholic father."
Mickey Rooney
as Tommy McCoy / Killer McCoy
Brian Donlevy
as Jim Caighn
Ann Blyth
as Sheila Carrson
James Dunn
as Brian McCoy
Tom Tully
as Cecil Y. Walsh
Sam Levene
as Happy
Walter Sande
as Bill Thorne
Mickey Knox
as Johnny Martin
James Bell
as Father Patrick Ryan
Gloria Holden
as Mrs. Laura McCoy
Bob Steele
as Sailor Graves
Frank Mayo
as Man at Bar (uncredited)
Milburn Stone
as Henchman (uncredited)
Shelley Winters
as Waitress / Autograph Hound (uncredited)
John George
as Man at Gym (uncredited)
Douglas Croft
as Danny Burns, Newsboy
Eve March
as Mrs. Martin
David Clarke
as Pete Mariola
June Storey
as Arlene
Eric Roberts
as Joe
Roy Rowland
Director
Frederick Hazlitt Brennan
Writer
Sam Zimbalist
Producer
Joseph Ruttenberg
Director of Photography
David Snell
Original Music Composer
Ralph E. Winters
Editor
Cedric Gibbons
Art Direction
George Oppenheimer
Story
Richard E. Thomas
Set Decoration
Dolph Zimmer
Assistant Director
Douglas Shearer
Sound Director
George Bruce
Edwin B. Willis
Eddie Imazu
Thomas Lennon