
| Adolphe Menjou | ... | Police Lt. Frank Kafka |
 | Arthur Franz | ... | Edward 'Eddie' Miller |

| Gerald Mohr | ... | Police Sgt. Joe Ferris |
 | Marie Windsor | ... | Jean Darr |

| Frank Faylen | ... | Police Insp. Anderson |
 | Richard Kiley | ... | Dr. James G. Kent |
 | Mabel Paige | ... | Landlady |
 | Marlo Dwyer | ... | May Nelson |
 | Geraldine Carr | ... | Checker |
| rest of cast listed alphabetically: |
 | Ken Terrell | ... | Guy with glasses pressing clothes at machine |
 | Fred Aldrich | ... | Man at Line-Up (uncredited) |
 | John H. Algate | ... | Man (uncredited) |
 | Jessie Arnold | ... | Woman (uncredited) |
 | Alice Bartlett | ... | Woman (uncredited) |
 | Harry Bechtel | ... | Man (uncredited) |
 | Lilian Bond | ... | Mrs. Fitzpatrick (uncredited) |
 | Gail Bonney | ... | Woman at Jean Darr Murder Scene (uncredited) |
 | John Bradley | ... | Rookie Policeman (uncredited) |
 | Barry Brooks | ... | Attendant (uncredited) |
 | John Brown | ... | Wise (uncredited) |
 | John Butler | ... | Man on Cable Car (uncredited) |
 | Bruce Cameron | ... | Motorcycle Policeman (uncredited) |
 | George Chesebro | ... | Shooting Gallery Concessionaire (uncredited) |
 | Harry Cheshire | ... | Mayor (uncredited) |
 | Cliff Clark | ... | Chief of Police (uncredited) |
 | Ralph O. Clark | ... | Smokestack Painter (uncredited) |
 | Kernan Cripps | ... | Policeman with teletypes (uncredited) |
 | Steve Darrell | ... | Detective at line-up (uncredited) |
 | Robert Day | ... | Man (uncredited) |
 | Dudley Dickerson | ... | Cleaner (uncredited) |
 | George Dockstader | ... | Mapes, Policeman (uncredited) |
 | Paul Dubov | ... | Barfly (uncredited) |
 | George Eldredge | ... | Voice of Man at Park Murder Scene (uncredited) |
 | John Eldredge | ... | Mr. Stonecroft (uncredited) |
 | Helen Elliot | ... | Woman (uncredited) |
 | Lucas Farara | ... | Child (uncredited) |
 | Byron Foulger | ... | Peter Eureka, Suspect (uncredited) |
 | Robert Foulk | ... | Police Officer Rivers (uncredited) |
 | Richard Freye | ... | Man (uncredited) |
 | Richard Glyer | ... | Detective (uncredited) |
 | Chuck Hamilton | ... | Policeman in Jean Darr's Apartment (uncredited) |
 | Fred Hartman | ... | Policeman (uncredited) |
 | Harry Harvey | ... | Man at Jean Darr Murder Scene (uncredited) |
 | Tommy Hawkins | ... | Outfielder (uncredited) |
 | Thomas Heidt | ... | Man (uncredited) |
 | Al Hill | ... | Bartender (uncredited) |
 | Mary Holly | ... | Woman (uncredited) |
 | Clark Howat | ... | Police Photographer (uncredited) |
 | J. Anthony Hughes | ... | Policeman at Jean Darr Murder Scene (uncredited) |
 | Donald Kerr | ... | Tenant in Hall (uncredited) |
 | Frank Kreig | ... | Jailer (uncredited) |
 | Mike Lally | ... | Concessionaire (uncredited) |

| Charles Lane | ... | Drunk in Bar (uncredited) |
 | Nolan Leary | ... | Husband of bumped woman (uncredited) |
 | Helen Linstrom | ... | Woman (uncredited) |
 | Marlene Lyden | ... | Woman (uncredited) |
 | Robert Malcolm | ... | Detective (uncredited) |
 | Rory Mallinson | ... | Policeman, line-up organizer (uncredited) |
 | Adrienne Marden | ... | Woman (uncredited) |
 | Paul Marion | ... | Al (uncredited) |
 | Charles Marsh | ... | Manager (uncredited) |
 | Vern Martell | ... | Policeman (uncredited) |
 | Roy Maypole | ... | TV Announcer (uncredited) |

| David McMahon | ... | Policeman (uncredited) |
 | Joseph Mell | ... | Joey, Presser at Cleaning Plant (uncredited) |
 | Don Michaelian | ... | Policeman (uncredited) |
 | Joe Miksak | ... | Detective (uncredited) |
 | Sidney Miller | ... | Intern (uncredited) |
 | Danny Mummert | ... | Boy (uncredited) |
 | Norman Nazarr | ... | Man (uncredited) |
 | Howard Negley | ... | Detective (uncredited) |
 | Danny Sue Nolan | ... | Sandy (uncredited) |
 | Edgar Novack | ... | Concessionaire (uncredited) |
 | Jay Novello | ... | Pete, Club Owner (uncredited) |
 | Kathleen O'Malley | ... | Woman (uncredited) |
 | Kathleen O'Rielly | ... | Woman (uncredited) |
 | Joe Palma | ... | Man (uncredited) |
 | Max Palmer | ... | Chadwick, ER Interne (uncredited) |
 | Steve Pendleton | ... | Ambulance Man (uncredited) |
 | Ralph Peters | ... | Police Interlocutor (uncredited) |
 | John Pickard | ... | George Tinman, Suspect in Line-Up (uncredited) |
 | Robin Raymond | ... | Woman Dunked at Carnival Concession (uncredited) |
 | Carl Benton Reid | ... | Mr. Liddell (uncredited) |
 | Grandon Rhodes | ... | Warren Fitzpatrick (uncredited) |
 | Luanna Scott | ... | Woman (uncredited) |
 | Sarah Selby | ... | TV Interviewer (uncredited) |

| Karen Sharpe | ... | Millie (uncredited) |
 | Frank Shaw | ... | (uncredited) |
 | Betty Shute | ... | Woman (uncredited) |
 | Leslie Sketchley | ... | Flaherty, Policeman (uncredited) |
 | Ralph Smiley | ... | Tony Debiaci, Suspect (uncredited) |
 | Frank Sully | ... | Man at Carnival Dunking Concession (uncredited) |
 | Patricia Toun | ... | Woman (uncredited) |
 | Renaldo Viri | ... | Policeman (uncredited) |
 | Ralph Volkie | ... | Suspect (uncredited) |
 | Charles Wagenheim | ... | Mr. Alpine (uncredited) |
 | Harlan Warde | ... | Mr. Harper (uncredited) |
 | Aline Watson | ... | Woman (uncredited) |
 | Charles Watts | ... | Detective (uncredited) |
 | Billy Wayne | ... | Barfly (uncredited) |
 | Elsa Weber | ... | Woman (uncredited) |
 | Willis West | ... | Man (uncredited) |
 | Jean Willes | ... | Woman on Street (uncredited) |
 | Robert Williams | ... | Police Photographer (uncredited) |
 | Wanda Wirth | ... | Woman (uncredited) |
 | Isabel Withers | ... | Desk Nurse (uncredited) |
 | Victor Sen Yung | ... | Tom, Waiter in Chinese Restaurant (uncredited) |