'Killer' McCoy
Jim Cain
Brian McCoy
Sheila 'Shelia' Carson
Johnny Martin
'Happy' Lane
Vivian
'Pug' Walsh
Bill Thorne
Tommy McCoy, as a boy
Pete Mariola
Mrs. Martin
Father Patrick Ryan
Murray
Boxing Match Spectator (uncredited)
Joe the Warehouse Bodyguard (uncredited)
Rocky Simpson (uncredited)
Mariola's Assistant (uncredited)
Stout Man in Bar (uncredited)
Reporter (uncredited)
Fighter at Gym (uncredited)
Photographer (uncredited)
Party Guest (uncredited)
Madison Square Garden Official (uncredited)