| Fell of Dark | 1971 | |
| The Turning of the Tide (apa The Castle of the Demon and written as Patrick Ruell) | 1971 | |
| A Fairly Dangerous Thing | 1972 | |
| Singleton's Law (apa Albion! Albion! and written as Dick Morland) | 1974 | |
| The Low Road (apa Death takes the Low Road and written as Patrick Ruell) | 1974 | |
| Very Good Hater | 1974 | |
| Beyond the Bone (apa Urn Burial and written as Patrick Ruell) | 1975 | |
| Another Death in Venice | 1976 | |
| The Spy's Wife | 1980 | |
| A Very Good Hater: A Tale of Revenge | 1982 | |
| Who Guards a Prince? (apa Guardians of the Prince) | 1982 | |
| Traitor's Blood | 1983 | |
| No Man's Land | 1985 | |
| Death of a Dormouse (written as Patrick Ruell) | 1987 | |
| The Collaborators | 1987 | |
| The Long Kill (written as Patrick Ruell) | 1988 | |
| Dream of Darkness (written as Patrick Ruell) | 1989 | |
| The Only Game (written as Patrick Ruell) | 1991 | |
| Matlock's System | 1996 | |
| The Stranger House | 2005 | |
| The Woodcutter | 2010 | |