- 1971 USA, United Kingdom
- Directed by
- John Mackenzie
- Produced by
- Gareth Wigan
- Written by
- Simon Raven
- Featuring
- David Hemmings, Douglas Wilmer, Tony Haygarth
- Running time
- 102 minutes
Articles related to Unman, Wittering and Zigo
10 great
10 great British thrillers of the 1970s
10 great British thrillers of the 1970s