 |
Deborah Raffin as Selena Frankham |
 |
David Langton as Victor Frankham |
 |
Oliver Tobias as Derek Tucker |
|
Christopher Scoular as Cecil Truscott |
 |
Clifford Rose as Keith Bennet |
 |
Shane Rimmer as Dr. Hersh |
 |
Barbara Keogh as Mrs. Villiers |
 |
Geraldine Gardner as Secretary |
|
Hugh Dickson as Superintendent Fred |
 |
Robert Rietti as Marcello |
| Writing | Robert Quigley | Writer |
| Writing | Ray Russell | Writer |
| Directing | Peter Sasdy | Director |
