Honest Robert Maynard finds himself serving as ship's surgeon under the infamous pirate Blackbeard.
| Actor | Role |
|---|---|
 Robert NewtonBlackbeard | Blackbeard |
 Linda DarnellEdwina Mansfield | Edwina Mansfield |
 William BendixBen Worley | Ben Worley |
 Keith AndesRobert Maynard | Robert Maynard |
 Torin ThatcherSir Henry Morgan | Sir Henry Morgan |
 Irene RyanAlvina, a lady in waiting | Alvina, a lady in waiting |
 Alan MowbrayNoll | Noll |
 Richard EganBriggs | Briggs |
 Skelton KnaggsGilly | Gilly |
 Dick WesselDutchman | Dutchman |
 Anthony CarusoPierre La Garde | Pierre La Garde |
 Jack LambertTom Whetstone | Tom Whetstone |
 Noel DraytonJeremy | Jeremy |
 Pat FlahertyJob Maggot | Job Maggot |
 Chuck RobersonMounted Soldier | Mounted Soldier |
| PPatrick WhyteCaptain | Captain |
| PPeter OrtizPirate | Pirate |