Wealthy young Herbert Alden, a would-be detective, is practicing housebreaking with his valet, an ex-convict, when he meets George and Polly, two real thieves; they are discovered and, following a chase, they go to Herbert's city apartment. George arranges with one of them, Tony-the-Lizard, to rob the guests at a ball given by Herbert's father at his country home. Herbert discovers that Tony is Tracy Sutton, a social lion engaged to Herbert's sister Roberta; and believing Herbert to be a famous criminal, Tony seeks his advice.
| Actor | Role |
|---|---|
 Ben LyonHerbert Alden | Herbert Alden |
 Virginia Lee CorbinRuth Webster | Ruth Webster |
 Lloyd WhitlockTracy Sutton | Tracy Sutton |
 Diana KaneRoberta Alden | Roberta Alden |
 Byron DouglasStephen Alden | Stephen Alden |
| CChristine ComptonMrs. Stephen Alden | Mrs. Stephen Alden |
| CCharles CraigFletcher | Fletcher |
 Sam HardyNick Fanshaw | Nick Fanshaw |
 Tammany YoungGeorge Barrow | George Barrow |
 Helen RowlandCissie Alden | Cissie Alden |
 Pauline StarkePolly Stoddard | Polly Stoddard |