A desperate gambler in debt with a gangster robs a Chinese tattoo artist, getting stabbed and killing the man in the process. A black spot appears on his chest and begins to spread and turn into a condemning tattoo
| Actor | Role |
|---|---|
 Dirk BenedictFrank Rowlett | Frank Rowlett |
 Jenny SeagroveSara Helston | Sara Helston |
 George SewellDet. Inspector Grant | Det. Inspector Grant |
 Tom AdamsWestcott | Westcott |
 Burt KwoukHai Lee | Hai Lee |
 Peter SettelenDet. Sergeant Kirby | Det. Sergeant Kirby |
 James EllisFather Dowd | Father Dowd |
 Reginald MarshDr. Melford | Dr. Melford |
 Michael CroninPymar | Pymar |
| RRobert OatesHara | Hara |
 Alibe ParsonsMomma Rose | Momma Rose |
| NNicholas FieldBilly Zarn | Billy Zarn |
 Maggie RennieMa Perkins | Ma Perkins |
 Hugh MortonButler | Butler |