The Avengers (TV Series)
Square Root of Evil (1961)
Full Cast & Crew
Directed by
| Don Leaver | ||
Writing Credits (in alphabetical order)
| John Bryce | ... | (story) (uncredited) |
| Richard Harris | ... | (teleplay) |
Cast (in credits order)
| Ian Hendry | ... | Dr. David Keel | |
| Patrick Macnee | ... | John Steed | |
 |
Ingrid Hafner | ... | Carol Wilson |
| Rest of cast listed alphabetically: | |||
|
|
Cynthia Bizeray | ... | Secretary |
|
|
Heron Carvic | ... | Five |
| Delphi Lawrence | ... | Lisa | |
| George Murcell | ... | Hooper | |
| Alex Scott | ... | The Cardinal | |
|
|
Vic Wise | ... | Jackie Warren |
| John Woodvine | ... | Bloom | |
Produced by
| Leonard White | ... | producer |
Production Design by
| Patrick Downing | ||
Sound Department
| Peter Cazaly | ... | sound supervisor (uncredited) |
Camera and Electrical Department
| Mike Baldock | ... | senior cameraman (uncredited) |
| Peter Kew | ... | lighting director (uncredited) |
Editorial Department
| Del Randall | ... | vision mixer (uncredited) |
Location Management
| Nansi Davies | ... | stage manager (uncredited) |
Music Department
| John Dankworth | ... | composer: theme music (as Johnny Dankworth) |
| John Scott | ... | theme: flute, piccolo (uncredited) |
Additional Crew
| John Bryce | ... | story editor (uncredited) |
| Barbara Forster | ... | production assistant (uncredited) |
| Geoff Smith | ... | floor manager (uncredited) |
| Peter Wayne | ... | operational supervisor (uncredited) |
