Mazie King, an adventurer, thanks to the good patronage of Mr. Niel, a society man, is invited to a birthday reception. Taking advantage of the opportunity, she lays out her plans to get away with some valuable jewels. Jim O'Bryan, the tool, sneaks in through a side window.
| Actor | Role |
|---|---|
 Barney GilmoreDetective O'Bryan | Detective O'Bryan |
 Lillian NiederaurMazie King | Mazie King |
 Edward RosemanBill Travis | Bill Travis |
 Mabel WrightMrs. Blake | Mrs. Blake |
 Roy ApplegateBud, assistant detective | Bud, assistant detective |
| RRoy GahrisJim O'Bryan | Jim O'Bryan |
| GGrace NormanMary O'Bryan | Mary O'Bryan |
| JJohn SharkeyTom Ryan | Tom Ryan |
| VViolet StuartMolly Ryan | Molly Ryan |
| GGeorge HenryMr. Blake | Mr. Blake |
| GGeorge StoneMr. Neil | Mr. Neil |
| RRichard LyslePolice Commissioner | Police Commissioner |