Trailer
Images
 | Phyllis Calvert as Mary Johnstone |
 | James Donald as Bill Haverton |
 | Margot Grahame as Joanna Dane |
 | Francis L. Sullivan as Anton Perami |
 | Guy Rolfe as Captain Fox |
 | David Tomlinson as Jimmy Marshall |
 | Raymond Huntley as Edward Marshall |
 | Derek Bond as Richard Faber |
 | Grey Blake as John Barber |
 | Sonia Holm as Anne Stephens |
 | Andrew Crawford as Kid Cormack |
 | Charles Victor as Harry Gunn |
 | Gerard Heinz as Romer |
 | Mary Hinton as Mrs. Barber |
 | Jan Van Loewen as Opera House Director |
| Arthur Goullet as 1st Guide |
| Leo Bieber as 2nd Guide |
 | Bonar Colleano as Reporter (uncredited) |
 | Philo Hauser as Ambulance Man (uncredited) |
 | Ferdy Mayne as Pelotti (uncredited) |
 | Jim Brady as Man Pushing Past Mary (uncredited) |
 | Karl Stepanek as Swiss Officer (uncredited) |
| Crew | |
| Alain Pol | Cinematography |
| Raymond Segard | Cinematography |
| Georges Tairraz II | Cinematography |
| J. Arthur Rank | Cinematography |
Sound | |
| John Greenwood | Music |
Editing | |
| Esmond Seal | Editor |
Directing | |
| Ken Annakin | Director |
Camera | |
| Jack E. Cox | Director of Photography |
Sound | |
| B. C. Sewell | Sound |
| Les Hammond | Sound |
Costume & Make-Up | |
| W.T. Partleton | Makeup Artist |
Art | |
| Richard Yarrow | Art Direction |
Sound | |
| Bill Salter | Sound |
Production | |
| Roy Rich | Associate Producer |
Directing | |
| Ernest Morris | Assistant Director |
Production | |
| Sydney Box | Producer |
Writing | |
| Robert Westerby | Screenplay |
Directing | |
| Michael C. Chorlton | Director |
