Directed by
| George Schaefer | ||
Writing Credits (in alphabetical order)
| Michael Dyne | ... | (writer) |
| Edward Essex | ... | (writer) |
| Catherine Gaskin | ... | (novel) |
Cast (in credits order)
| Judith Anderson | ... | Elizabeth Devlin | |
| Rest of cast listed alphabetically: | |||
| Mary Adams | ... | The Maid | |
| Elizabeth Ashley | ... | Sally Devlin | |
| Barry Cahill | ... | The Sergeant | |
| Alan Caillou | ... | The Police Inspector | |
| Helmut Dantine | ... | Hans Raedler | |
| Gregory Gaye | ... | The Soviet Ambassador (as Gregory Gay) | |
 |
Larry Gelbman | ... | The Manservant (as Larry J. Gelbmann) |
| Lew Horn | ... | The Intruder | |
|
|
Peter Marland-Jones | ... | Tichborne |
| David McCallum | ... | Kenneth Canfield | |
| Donald Moffat | ... | John Heywood | |
| Priscilla Morrill | ... | Tatiana Kogan | |
| Laurence Naismith | ... | Lord Pomeroy | |
|
|
Charles H. Radilak | ... | Lancome (as Charles Radilac) |
Produced by
| Robert Hartung | ... | producer |
| George Schaefer | ... | executive producer |
Music by
| Bernard Green | ||
Art Direction by
| James Trittipo | ||
Makeup Department
| Ralph Gulko | ... | makeup artist |
Art Department
| Jack Stewart | ... | assistant art director |
Sound Department
| Emil Neroda | ... | sound mixer |
Costume and Wardrobe Department
| Noel Taylor | ... | costumer |
