A down-on-his luck businessman organizes an excursion to Sir Henry Morgan's Island for a treasure hunt only to encounter a mysterious phantom and murder.
| Actor | Role |
|---|---|
 Dick ForanBill Martin | Bill Martin |
 Leo CarrilloTobias Clump | Tobias Clump |
 Peggy MoranWendy Creighton | Wendy Creighton |
 Fuzzy KnightStuff Oliver | Stuff Oliver |
 John EldredgeCousin George | Cousin George |
 Lewis HowardThurman Coldwater | Thurman Coldwater |
 Hobart CavanaughProfessor Jasper Quinley | Professor Jasper Quinley |
 Walter CatlettSergeant McGoon | Sergeant McGoon |
 Ralf HaroldeRod Grady | Rod Grady |
 Iris AdrianArleen Grady | Arleen Grady |
| FFoy Van DolsenPanama Pete | Panama Pete |
 Emmett VoganThe Stranger | The Stranger |
 Robert BarronWreck Spectator (uncredited) | Wreck Spectator (uncredited) |
 Ted BillingsWreck Spectator (uncredited) | Wreck Spectator (uncredited) |
 Eddy ChandlerPolice Officer (uncredited) | Police Officer (uncredited) |
 Don DillawaySailor (uncredited) | Sailor (uncredited) |
 Walter TetleyDelivery Boy (uncredited) | Delivery Boy (uncredited) |