| Jerome K. Arbutny | 西德尼·格林斯垂特
 | |
| Crystal Shackleford | 杰拉丁·菲茨杰拉德
 | |
| Johnny West | 彼得·洛
 | |
| Icey Crane | 琼·洛林
 | |
| Bertram Fallon | Robert Shayne | |
| Janet Elliott | Marjorie Riordan | |
| Prosecutor | Arthur Shields | |
| Lady Rhea Beladon | Rosalind Ivan | |
| Junior Clerk | John Alvin | |
| Timothy Delaney aka Gabby | Peter Whitney | |
| David Shackleford | Alan Napier
 | |
| Senior Clerk | Clifford Brooke | |
| Mrs. Proctor | Doris Lloyd | |
| Mr. Giesing (uncredited) | Norman Ainsley | |
| Drunken Stranger (uncredited) | Benny Burt | |
| Narrator (uncredited) | John Burton | |
| Man in Pub (uncredited) | Woody Chambliss | |
| Pub Patron (uncredited) | Tom Coleman | |
| Man on Park Bench (uncredited) | Alec Craig | |
| Stockbroker (voice) (uncredited) | Cyril Delevanti
 | |
| Detective (uncredited) | Leslie Denison | |
| Man in Pub (uncredited) | Creighton Hale | |
| Sir Robert (uncredited) | 福尔摩斯·赫伯特
 | |
| Donald Fry (uncredited) | Keith Hitchcock | |
| Police Inspector in Pub (uncredited) | Leyland Hodgson | |
| Prison Turnkey (uncredited) | Olaf Hytten | |
| Man on the Street / Man in Pub (uncredited) | Fred Kelsey | |
| Alfred - Innkeeper / Bartender (uncredited) | Colin Kenny | |
