5.8
1972
 The Triple Echo (1972)
The Triple Echo (1972)
7.0
1985
 A Zed & Two Noughts (1985)
A Zed & Two Noughts (1985)
5.9
1974
 Vampyres (1974)
Vampyres (1974)
6.0
1976
 The Feathered Serpent (1976)
The Feathered Serpent (1976)