Drummond manages to save a woman from jumping in front of his car but she runs away with his car. He traces her and she asks him to help her out of a dangerous situation.
| Actor | Role |
|---|---|
 Ray MillandHugh "Bulldog" Drummond | Hugh "Bulldog" Drummond |
 Guy StandingReginald Nielson | Reginald Nielson |
 Heather AngelPhyllis Clavering | Phyllis Clavering |
 Reginald DennyAlgy Longworth | Algy Longworth |
 Porter HallNorman Merridew | Norman Merridew |
 Fay HoldenNatalie Merridew Seldon | Natalie Merridew Seldon |
 E. E. Clive"Tenny" Tennison | "Tenny" Tennison |
 Walter Kingsford"Professor" Stanton | "Professor" Stanton |
| PP.J. KellyStiles, Butler | Stiles, Butler |
 Charles McNaughtonChief Constable Higgins | Chief Constable Higgins |
 Clyde CookConstable Alf | Constable Alf |
 Frank ElliottBailey | Bailey |
 David ClydeGower | Gower |
 Doris LloydNurse | Nurse |
 Robert AdairWoolsey | Woolsey |
| JJ. Gunnis DavisAttendant | Attendant |
| BBobby HaleAttendant (uncredited) | Attendant (uncredited) |
| BBarry MacollumBlodgson | Blodgson |
| HHenry MowbrayBobby | Bobby |
| JJohn PowerCustoms Officer | Customs Officer |
 Pat SomersetReporter | Reporter |
 Ernie StantonReporter (uncredited) | Reporter (uncredited) |
 Colin TapleyDixon | Dixon |
 Zeffie TilburyDrunk in Jail Cell | Drunk in Jail Cell |