导演 查尔斯·拉蒙特

Bud Alexander 巴德·阿伯特

Lou Francis 卢·科斯特洛

Helen Gray Nancy Guild

Tommy Nelson Arthur Franz

Boots Marsden Adele Jergens

Boots Morgan Sheldon Leonard

Det. Roberts William Frawley

Dr. Philip Gray Gavin Muir

Radio Announcer Sam Balter

Rocky Hanlon John Daheim

Professor Dugan (uncredited) Walter F. Appler

Sneaky (uncredited) Bobby Barber

Officer (uncredited) Howard Banks

Bald Man (uncredited) Richard Bartell

Fight Spectator (uncredited) Phil Bloom

Trainer (uncredited) John Breen

Ring Announcer (uncredited) Milt Bronson

Man at Bar (uncredited) Ralph Brooks

Reporter (uncredited) Steve Carruthers

Dugan Detective School Graduate (uncredited) Tom Coleman

Counter Man (uncredited) 切斯特·康克林

Trainer (uncredited) Bing Conley

Newspaperman (uncredited) Russ Conway

Fight Spectator (uncredited) Paul Cristo

Col. Duffie (uncredited) Frank Dae

Man (uncredited) Roy Darmour

Reporter (uncredited) Sayre Dearing

Hospital Visitor (uncredited) Jack Deery

Man in Gym (uncredited) 詹姆斯·迪姆

Motorcycle Cop (uncredited) 拉尔夫·邓恩

Reporter (uncredited) George Ford

Milt (uncredited) Edward Gargan

Bartender (uncredited) Harold Goodwin

Man (uncredited) Dick Gordon

Fighter on Rowing Machine (uncredited) Kit Guard

Graduation Spectator (uncredited) Bobby Hale

Policeman (uncredited) Chuck Hamilton

Fight Spectator (uncredited) Stuart Holmes

Policeman (uncredited) Kenner G. Kemp

Trainer (uncredited) Johnny Kern

Fight Spectator (uncredited) Donald Kerr

Cop (uncredited) Perc Launders

Torpedo Al (uncredited) George J. Lewis

Tough Guy in Bar (uncredited) Rory Mallinson

Dr. Turner (uncredited) Paul Maxey

Graduation Spectator (uncredited) Mathew McCue

Restaurant Patron (uncredited) Hans Moebus

Photographer (uncredited) Ralph Montgomery

Training Spectator (uncredited) Mike Morelli

Fight Spectator (uncredited) William H. O'Brien

Fight Spectator (uncredited) Monty O'Grady

Photographer (uncredited) Franklin Parker

Dugan Detective School Graduate (uncredited) Jack Perrin

Rocky's Handler (uncredited) Jack Perry

Waiter (uncredited) Victor Romito

Fight Spectator (uncredited) Clark Ross

Waiter (uncredited) Syd Saylor

Fighter (uncredited) Sammy Shack

Nurse (uncredited) Edith Sheet

Attendant (uncredited) Jack Shutta

Lou's Handler (uncredited) Carl Sklover

Newspaperman (uncredited) Billy Snyder

Dugan Detective School Graduate (uncredited) Brick Sullivan

Referee (uncredited) Frankie Van

Stillwell (uncredited) Herb Vigran

Rooney - Rocky's Manager (uncredited) Billy Wayne