Discover
Original Release
04/25/1969
Cast
| Name | Character |
|---|
| Marius Goring | Prof. John Hardy / Dr John Hardy |
| Ann Morrish | Dr. Jo Hardy / Dr Jo Hardy |
| Victor Winding | Det. Chief Insp. Fleming |
| Michael Farnsworth | Det. Sgt. Ashe |
| Valerie Murray | Sandra Hughes |
| Peter Barkworth | Williams |
| Timothy Bateson | Gregg |
| Eric Dodson | Ackroyd |
| John Grieve | Jezzard |
| Basil Henson | Frank Houghton |
Directors
Prudence Fitzgerald, Ronald Wilson
Writers
Mervyn Haisman, Henry Lincoln, N.J. Crisp, Gerard Glaister
Creators
Cast
| Name | Character |
|---|
| Marius Goring | Prof. John Hardy / Dr John Hardy |
| Ann Morrish | Dr. Jo Hardy / Dr Jo Hardy |
| Victor Winding | Det. Chief Insp. Fleming |
| Michael Farnsworth | Det. Sgt. Ashe |
| Valerie Murray | Sandra Hughes |
| Peter Barkworth | Williams |
| Timothy Bateson | Gregg |
| Eric Dodson | Ackroyd |
| John Grieve | Jezzard |
| Basil Henson | Frank Houghton |
| Jean Marsh | Sybil Houghton |
| Barry Meteyard | Sgt. Croft |
| Glyn Owen | Thorpe |
Producers
| Name | Role |
|---|
| Gerard Glaister | Producer |
