A couple of murderous crooks try to smuggle the famous Stanhope diamonds into New York but they're double-crossed and killed before reaching New York.
| Actor | Role |
|---|---|
 Donald MeekDr. Crabtree - Criminologist | Dr. Crabtree - Criminologist |
 John HamiltonInspector Carr | Inspector Carr |
| BBetty PierceDaisy | Daisy |
 Harry T. MoreyShip's Captain | Ship's Captain |
 Ray CollinsWaite | Waite |
 Walter KingsfordDodge - Miller's Valet (uncredited) | Dodge - Miller's Valet (uncredited) |
 Charles Cahill WilsonDetective Doyle (uncredited) | Detective Doyle (uncredited) |