Beatrice Lillie shines in disguise as a private detective.
| Actor | Role |
|---|---|
 Beatrice LillieShirley Travis | Shirley Travis |
 John GarrickGeoffrey Troon | Geoffrey Troon |
 Olga BaclanovaCountess Helenka | Countess Helenka |
 George GrossmithDuke of St. Pancras | Duke of St. Pancras |
| RRoger DavisBarber | Barber |
| JJillian SandBarbara Blythe | Barbara Blythe |
 Gustav von SeyffertitzBarber | Barber |
| NNicholas SoussaninBarber | Barber |
 Richard AlexanderInternational Crook | International Crook |
 Henry VictorInternational Crook | International Crook |
 Lloyd HamiltonHostler | Hostler |
| PPaula LanglenPage | Page |
 Donald ReedYoung Man | Young Man |
 Charles GemoraGorilla (uncredited) | Gorilla (uncredited) |
 John LoderBit Role (uncredited) | Bit Role (uncredited) |