| Susan Hayward | Barbara Graham |
| Simon Oakland | Edward S. 'Ed' Montgomery |
| Virginia Vincent | Peg |
| Theodore Bikel | Carl G.G. Palmberg |
| Wesley Lau | Henry L. Graham |
| Philip Coolidge | Emmett Perkins |
| Lou Krugman | John R. 'Jack' Santo |
| James Philbrook | Bruce King |
| Bartlett Robinson | District Attorney Milton |
| Gage Clarke | Attorney Richard G. Tibrow |
| Joe De Santis | Al Matthews |
| John Marley | Father Devers |
| Raymond Bailey | San Quentin Warden |
| Alice Backes | Barbara, San Quentin Nurse |
| Gertrude Flynn | San Quentin Matron |
| Russell Thorson | San Quentin Sgt. |
| Dabbs Greer | San Quentin Capt. |
| Stafford Repp | Police Sgt. |
| Gavin MacLeod | Police Lt. |
| Wendell Holmes | Detective |
| Gerry Mulligan | Jazz Combo Member |
| Shelly Manne | Jazz Combo Member |
| Red Mitchell | Jazz Combo Member |
| Art Farmer | Jazz Combo Member |
| Frank Rosolino | Jazz Combo Member |
| Pete Jolly | Jazz Combo Member |
| Bud Shank | Jazz Combo Member |
| Leonard Bell | San Francisco Hood (uncredited) |
| Olive Blakeney | Corona Warden (uncredited) |
| Peter Breck | Ben Miranda (uncredited) |
| Ralph Brooks | Man in Photo with Barbara and Peg (uncredited) |
| King Donovan | (uncredited) |
| Lew Gallo | Undercover Cop at Bar (uncredited) |
| Paul Genge | Police Inspector (uncredited) |
| Brett Halsey | Sailor at Party (uncredited) |
| Stuart Holmes | Loafer with Cigar (uncredited) |
| Jason Johnson | Bixel, the Landlord (uncredited) |
| Kenner G. Kemp | Reporter in Courtroom (uncredited) |
| Mike Lally | Reporter in Courtroom (uncredited) |
| Rusty Lane | Judge (uncredited) |
| S. John Launer | San Quentin Officer (uncredited) |
| Len Lesser | Charlie, Newspaperman (uncredited) |
| Jon Lormer | San Quentin Doctor (uncredited) |
| Herbert Lytton | Newspaperman (uncredited) |
| James Maloney | Prison Dentist (uncredited) |
| Marion Marshall | Rita (uncredited) |
| Ken Mayer | Drunk at Party (uncredited) |
| William Mims | Sucker at Card Game (uncredited) |
| Joe Ploski | Courtroom Spectator (uncredited) |
| George Putnam | Himself - TV Newsman (uncredited) |
| Gene Roth | Eric, Machinist (uncredited) |
| Herman Rudin | (uncredited) |
| Evelyn Scott | Personal Effects Clerk (uncredited) |
| Dan Sheridan | Police Broadcaster (uncredited) |
| Bill Stout | Himself - TV Newsman (uncredited) |
| Hope Summers | Ethel - Policewoman on Bus (uncredited) |
| Hal Taggart | Juror (uncredited) |
| Lorna Thayer | Corona Guard (uncredited) |
| Jack Weston | NCO at Party (uncredited) |
| Than Wyenn | San Francisico Hood (uncredited) |
