Leonard Nimoy is "Kid" Monk Baroni, the leader of a street gang who becomes a professional boxer to escape his life in "Little Italy" New York.
| Actor | Role |
|---|---|
 Leonard NimoyPaul 'Monk' Baroni | Paul 'Monk' Baroni |
 Richard RoberFather Callahan | Father Callahan |
 Mona KnoxJune Travers | June Travers |
 Bruce CabotMr. Hellman | Mr. Hellman |
 Allene RobertsEmily Brooks | Emily Brooks |
| BBudd JaxonKnuckles | Knuckles |
| AArcher MacDonaldPete | Pete |
 Kathleen FreemanMaria Baroni | Maria Baroni |
 Jack LarsonAngelo | Angelo |
 Joseph MellGino Baroni (as Joe Mell) | Gino Baroni (as Joe Mell) |
 Paul MaxeyAl Petry | Al Petry |
 Stuart RandallMr. Moore | Mr. Moore |
 Wayne MalloryTony (as Chad Mallory) | Tony (as Chad Mallory) |
| TTed AveryJoey | Joey |
| MMadelynn BroderLittle Girl in Church | Little Girl in Church |