When a good-for-nothing man named Dan is stabbed to death and his arm broken, Charlie Chan is on the case. His first clue comes from the victim's sister, who noticed a prowler wearing a glow-in-the-dark wristwatch.
| Actor | Role |
|---|---|
 Warner OlandCharlie Chan | Charlie Chan |
 Heather AngelCarlotte Eagan | Carlotte Eagan |
 Roger ImhofThe Beachcomber | The Beachcomber |
 John WarburtonJohn Quincy Winterslip | John Quincy Winterslip |
 Walter ByronHenry Jennison | Henry Jennison |
 Ivan F. SimpsonBrade | Brade |
 Virginia CherrillBarbara Winterslip | Barbara Winterslip |
 Francis FordCaptain Hallett | Captain Hallett |
 Robert WarwickDan Winterslip | Dan Winterslip |
 Frank McGlynn Sr.Amos Winterslip | Amos Winterslip |
 Clara BlandickMinerva Winterslip | Minerva Winterslip |
 Claude KingCapt. Arthur Cope | Capt. Arthur Cope |
 William StackJames Eagan | James Eagan |
| GGloria RoyArlene Compton | Arlene Compton |
 Cornelius KeefeSteve Letherbee | Steve Letherbee |