| Horatio 'Boston Blackie' Black | 切斯特·莫里斯
 | |
| Sally Brown | 尼娜·弗彻
 | |
| James 'Jimmy' Cook | 史蒂夫·柯臣
 | |
| Inspector John Farraday | Richard Lane
 | |
| The Runt | George E. Stone
 | |
| Detective Sergeant Matthews | Frank Sully | |
| Martha | 艾丽斯·艾德里安
 | |
| 1st Bruiser (uncredited) | Richard Alexander | |
| 2nd Bruiser (uncredited) | Bing Conley | |
| Cab Driver Steve Caveroni (uncredited) | Joe Devlin | |
| Man asking about Irene (uncredited) | Eddie Hall | |
| Arthur Manleder (uncredited) | Harry Hayden | |
| Chambermaid (uncredited) | Marilyn Johnson | |
| 3rd Reporter (uncredited) | Charles Jordan | |
| Doorman (uncredited) | Tom Kennedy | |
| 2nd Reporter (uncredited) | Perc Launders | |
| Man in Line (uncredited) | Bob Meredith | |
| The Hotel Porter (uncredited) | Clarence Muse | |
| Third Cop (uncredited) | Joe Palma | |
| Patricia Powers (uncredited) | Adele Roberts | |
| 1st Reporter (uncredited) | Frank Stevens | |
| Hotel Clerk (uncredited) | Dan Stowell | |
| 3rd Bruiser (uncredited) | Charles Sullivan | |
| Mike First Cop (uncredited) | John Tyrrell | |
| Dr. Volkman (uncredited) | Philip Van Zandt | |
