A female secret agent has gotten ahold of a new type of explosive gas. She has to avoid the efforts of two men who are trying to steal it. They succeed in doing so, but the gas turns out to be not quite what they expected.
| Actor | Role |
|---|---|
 Theda BaraMadame Mysterieux | Madame Mysterieux |
 Tyler BrookeHungry Artist | Hungry Artist |
 James FinlaysonStruggling Author | Struggling Author |
 Oliver HardyCaptain Schmaltz | Captain Schmaltz |
 Fred MalatestaMan of a Thousand Eyes | Man of a Thousand Eyes |
 Martha SleeperNot listed | Not listed |
 Sammy BrooksNot listed | Not listed |
 Helen GilmoreNot listed | Not listed |
 William GillespieNot listed | Not listed |
| RR.E. MadesonNot listed | Not listed |
| MMarguerite GonzalezNot listed | Not listed |