Ben Gazzara as John Resko

Stuart Whitman as Principal Keeper

Ray Walston as Iggy

Vincent Price as Carl Carmer

Rod Steiger as Tiptoes

Broderick Crawford as Warden

Dodie Stevens as Resko's Sister

Jack Kruschen as Resko's Father

Sammy Davis Jr. as Wino

Naomi Stevens as Resko's Mother

Adam Williams as Guard

Jack Albertson as Teach

John Kellogg as Guard

Robert H. Harris as Commissioner

Carmen Phillips as Connie Resko

Timothy Carey as Nick

Myron Healey as Gunther

Lee Krieger as Stanley

Josip Elic as Vic the Barber

Arthur Malet as Storekeeper

Robert Christopher as Guard

Reggie Nalder as Greer

Kreg Martin as Guard

Susan Silo as Cathy (as an adult)

Tom Gilson as Lefty

Roland La Starza as Duke

Warren J. Kemmerling as Guard

Andy Albin as Inmate

John Close as Guard

John Dennis as Cell Block Guard

Billy Varga as Guard

Burt Lange as Gallery Man

Vincent Barbi as Painter (uncredited)

Peter Besbas as Sculptor (uncredited)

John Dierkes as Cell Block Guard (uncredited)

Bobby Gilbert as Sculptor (uncredited)

Sid Kane as Sculptor (uncredited)

Lenny Kent as Painter (uncredited)

Johnny Kern as Convict (uncredited)

Ernesto Molinari as Sculptor (uncredited)

Norman Nazarr as Sculptor (uncredited)

Norman Stevans as Sculptor (uncredited)

Robert Swimmer as Guard (uncredited)

Robert White as Guard (uncredited)