 | John Derek als Prince Roland |
 | Barbara Rush als Countess Nita Orde |
 | Carla Balenda als Princess Maria |
 | Whitfield Connor als King Stephan |
 | Edgar Barrier als Count Blanco |
 | Robert Shayne als Prime Minister Treeg |
 | Harry Lauter als Jan |
 | Don C. Harvey als Koepke (as Don Harvey) |
 | Henry Rowland als Greb |
 | Britt Lomond als Brenner (as Glase Lohman) |
 | Gene Roth als Captain Brock |
 | Bob Peoples als Carl |
 | Sandy Sanders als Meyers |
 | Joe McGuinn als General DuBois (as Joseph F. McGuinn) |
| Al Cantor als Lund |
 | Edward Colmans als Spanish Admiral |
 | Stanley Blystone als Captain Brock's First Mate (uncredited) |
 | James Dime als Pirate (uncredited) |
| Eddie Foster als Sailor (uncredited) |
 | John Hart als Captain of the Guards (uncredited) |
| Sidney Salkow | Director |
| William Copeland | Story |
| John O'Dea | Screenplay |
| Herbert Kline | Story |
| Samuel Newman | Screenplay |
| Henry Freulich | Director of Photography |
| Paul Palmentola | Art Direction |
| Jerome Thoms | Editor |
| Sidney Clifford | Set Decoration |
| Jack Erickson | Special Effects |
| Jack Corrick | Assistant Director |
| J.S. Westmoreland | Sound Engineer |
| Mischa Bakaleinikoff | Music |
| Herbert B. Leonard | Unit Manager |
| Sam Katzman | Producer |
| Dotha Hippe | Hairstylist |
| Ray Sebastian | Makeup Artist |
| Leonard Katzman | Second Assistant Director |
| Wesley Morton | Property Master |
| Joe Finochio | Sound Recordist |
| Sandy Sanders | Stunts |
| David Sharpe | Stunt Double |
| Joseph A. August Jr. | Assistant Camera |
| Al Becker | Grip |
| Al Layter | Gaffer |
| Emil Oster | Camera Operator |
| Harold Clandenning | Wardrobe Designer |
| Francis Cugat | Color Assistant |
| Florence Swan | Script Supervisor |
