 | Mark Lester als Marcus |
 | Britt Ekland als Elise |
 | Hardy Krüger als Paul |
 | Lilli Palmer als Dr. Viorne |
 | Harry Andrews als Headmaster |
 | Conchita Montes als Sophie |
 | Colette Giacobine als Sarah |
| Andrea Bianchi | Director |
| Andrea Bianchi | Writer |
| Erich Kröhnke | Writer |
| Trevor Preston | Screenplay |
| Bautista Lacasa Nebot | Writer |
| Harry Waxman | Director of Photography |
| Luis Cuadrado | Director of Photography |
| James Kelley | Director |
| Andrés Vicente Gómez | Executive Producer |
| Graham Harris | Producer |
| Harry Alan Towers | Producer |
| Oliver A. Unger | Executive Producer |
| Stelvio Cipriani | Original Music Composer |
| Nicholas Wentworth | Editor |
| Primitivo Álvaro | Production Manager |
| Roger Goodall | Sound Recordist |
| Brian Holland | Sound Editor |
| John Ireland | Sound Editor |
| Peter Lodge | Sound Recordist |
| Wally Byatt | Camera Operator |
| Ronnie Maasz | Camera Operator |
| Alan Jones | Assistant Editor |
| John Southwood | Location Manager |
| Isabel Mulá | Script Supervisor |
