All the passengers on an airplane headed for San Francisco are drugged, and when they wake up, it is discovered that a quarter-million dollars is missing. Charlie Chan--and, of course, his #1 son--must discover the identity of the person who doped the passengers and stole the money.

• Roland Winters
• Keye Luke
• Mantan Moreland
• Noel Neill
• Tim Ryan
• Iris Adrian
• Elena Verdugo
• Milburn Stone