| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alfred DeGaetano | Crew | Editing | Editor |
 Alfred L. Werker | Crew | Directing | Director |
 Anthony Mann | Crew | Directing | Co-Director |
Armor Marlowe | Crew | Art | Set Decoration |
 Bryan Foy | Crew | Production | Producer |
Clarence Steensen | Crew | Art | Set Decoration |
 Crane Wilbur | Crew | Writing | Screenplay, Story |
Edward L. Ilou | Crew | Art | Art Direction |
Harry Essex | Crew | Crew | Additional Dialogue |
 Howard W. Koch | Crew | Directing | Assistant Director |
Hugh McDowell Jr. | Crew | Sound | Sound |
James T. Vaughn | Crew | Production | Production Supervisor |
Joe Stinton | Crew | Costume & Make-Up | Makeup Artist |
 John Alton | Crew | Camera | Director of Photography |
John C. Higgins | Crew | Writing | Screenplay |
Leonid Raab | Crew | Sound | Original Music Composer |
Lester Shorr | Crew | Camera | Camera Operator |
Robert Kane | Crew | Production | Producer |
 Stewart Stern | Crew | Crew | Other |
Leon Becker | Crew | Sound | Sound |
Ern Westmore | Crew | Costume & Make-Up | Makeup Artist |
 Alma Beltran | Cast | Actress | Miss Montalvo (uncredited) |
 Ann Doran | Cast | Actress | Dispatcher (uncredited) |
 Anthony Jochim | Cast | Actor | Liquor Store Proprietor (uncredited) |
 Bert Moorhouse | Cast | Actor | Detective (uncredited) |
 Billy Mauch | Cast | Actor | Handsome (uncredited) |
 Byron Foulger | Cast | Actor | Freddie (uncredited) |
Carlotta Monti | Cast | Actress | Miss Montavio (uncredited) |
 Charles Lang | Cast | Actor | Policeman (uncredited) |
 Charles Meredith | Cast | Actor | Hollywood Police Official (uncredited) |
Dolores Castelli | Cast | Witness (uncredited) | |
Donald Kerr | Cast | Actor | Mailman (uncredited) |
 Dorothy Adams | Cast | Actress | Milk Customer |
 Frank Cady | Cast | Actor | Pete Hammond |
 Harlan Warde | Cast | Actor | Police Operator 27 (uncredited) |
 Harry Harvey | Cast | Actor | Liquor Store Proprietor (uncredited) |
 Harry Wilson | Cast | Actor | Prison Inmate (uncredited) |
 Howard Negley | Cast | Actor | Lt. Greeson (uncredited) |
 Jack Bailey | Cast | Actor | Witness in Pajamas and Robe (uncredited) |
 Jack Webb | Cast | Actor | Lee Whitey |
 James Cardwell | Cast | Actor | Police Sgt. Chuck Jones |
 James Nolan | Cast | Actor | Harry (uncredited) |
 Jane Adams | Cast | Actress | Nurse Scanion (uncredited) |
 John Dehner | Cast | Actor | Assistant Bureau Chief (uncredited) |
 John McGuire | Cast | Actor | Officer Robert Rawlins (uncredited) |
 John Parrish | Cast | Actor | Liquor Store Proprietor (uncredited) |
 Kenneth Tobey | Cast | Actor | Detective Questioning Pete (uncredited) |
 Kit Guard | Cast | Actor | Suspect (uncredited) |
 Lyle Latell | Cast | Actor | Police Sergeant (uncredited) |
Michael Dugan | Cast | Actor | Patrolman (uncredited) |
 Paul Fierro | Cast | Actor | Spanish-Speaking Detective (uncredited) |
 Paul Scardon | Cast | Actor | Liquor Store Proprietor (uncredited) |
Peter Hobbes | Cast | Milkman (uncredited) | |
 Reed Hadley | Cast | Actor | Narrator (voice) (uncredited) |
 Rex Downing | Cast | Actor | Young Hoodlum (uncredited) |
 Richard Basehart | Cast | Actor | Roy Martin / Roy Morgan |
 Robert B. Williams | Cast | Actor | Detective (uncredited) |
 Robert Bice | Cast | Actor | Detective with Capt. Breen (uncredited) |
 Rory Mallinson | Cast | Actor | Detective with Harry (uncredited) |
 Roy Roberts | Cast | Actor | Police Captain Breen |
 Scott Brady | Cast | Actor | Police Sgt. Marty Brennan |
 Steve Pendleton | Cast | Actor | Detective (uncredited) |
 Thomas Browne Henry | Cast | Actor | Dunning (uncredited) |
Tim Graham | Cast | Actor | Uniformed Sergeant (uncredited) |
 Tommy Kelly | Cast | Actor | Redhead (uncredited) |
 Virginia Hunter | Cast | Actress | Miss Smith (uncredited) |
 Wally Vernon | Cast | Actor | Postman (uncredited) |
 Whit Bissell | Cast | Actor | Paul Reeves |
 Mary Ware | Cast | Actress | Reeves' Secretary (uncredited) |
Stan Johnson | Cast | Artist (uncredited) | |
Louise Kane | Cast | Mrs. Rawlins (uncredited) | |
Felice Ingersoll | Cast | Records Clerk (uncredited) | |
George Chan | Cast | Chinese Suspect (uncredited) | |
 Garrett Craig | Cast | Actor | Patrolman (uncredited) |
Kay Garrett | Cast | Actor | Doctor (uncredited) |
John Perri | Cast | Young Hoodlum (uncredited) | |
| Person | Type | Job | Role(s) |
