| Title | Titolo | Year | Series |
| Moura | 1959 | Moura | |
| The Affair At Alkali | 1960 | ||
| Nevada Gunslinger | 1962 | ||
| Castle at Witches Coven | 1965 | ||
| Curse of the Island Pool | 1965 | ||
| The Devil Beyond Moura | 1966 | Moura | |
| Black Heather | 1966 | ||
| Castle Barra | 1966 | ||
| Demon Tower | 1966 | ||
| The Devil Vicar | 1966 | ||
| The Secret of Shower Tree | 1966 | ||
| A Few Fiends to Tea | 1967 | ||
| Hounds of Hell / Carnaby Curse | 1967 | ||
| The Dark Gondola | 1968 | ||
| Richest Girl in the World | 1968 | ||
| The Shadow Box | 1968 | ||
| The Small Tawny Cat | 1968 | ||
| Villa Fountains | 1968 | ||
| The Candidate's Wife | 1969 | ||
| Of Love and Intrigue | 1969 | ||
| To Love a Dark Stranger | 1969 | ||
| The Vampyre of Moura | 1970 | Moura | |
| Beach House | 1970 | ||
| The Devil's Mistress | 1970 | ||
| Masque By Gaslight | 1970 | ||
| Voodoo Widow | 1970 | ||
| The Devil's Virgin | 1971 | Lucifer Cove | |
| Chalet Diabolique | 1971 | ||
| From Satan, with Love | 1971 | ||
| Mist at Darkness | 1971 | ||
| Chinese Door | 1971 | ||
| Mistress Devon | Su il sipario | 1972 | |
| Night at Sea Abbey | 1972 | ||
| The Dark Palazzo | 1973 | ||
| Evil at Queen's Priory | 1973 | ||
| A Fear of Heights | 1973 | ||
| Garden of shadows | 1973 | ||
| Masque of Satan | 1973 | ||
| The Dark Beyond Moura | 1974 | Moura | |
| The House at Sandalwood | 1974 | ||
| Hyde Place | 1974 | ||
| High Terrace | 1975 | ||
| The Ice Forest | 1975 | ||
| Master of Blue Mire | 1975 | ||
| Haunted Place | 1975 | ||
| Veronique | 1975 | ||
| Alpine Coach | 1976 | ||
| Balck Heather | 1976 | ||
| Enemy of Love | 1976 | ||
| Marsanne | 1976 | ||
| Rest in Silence | 1976 | ||
| The Beckoning from Moura | 1977 | Moura | |
| Priestess of the Damned | 1977 | ||
| Fire Dawn | 1977 | ||
| House on the Moat | 1977 | ||
| Careen | 1977 | ||
| The Curse: The Cultural History | 1977 | ||
| Cliffs of Dread | 1978 | ||
| Isle of the Undead | 1978 | ||
| Looking Glass | 1978 | ||
| The Gaynor Women | Storia di donne | 1978 | |
| Legacy of Fear | 1979 | ||
| Dinah Faire | 1979 | ||
| Praise at Woman | 1980 | ||
| Pacific Cavalcade | 1981 | ||
| The Lombard Cavalcade | 1982 | ||
| Lombard Heiress | 1983 | ||
| Stalking Terror | 1983 | ||
| Dynasty of Dreams | 1984 | ||
| The Orchid Tree | 1984 | ||
| Dynasty of Desire | 1984 | ||
| Strange Secrets | 1984 | ||
| Dark Winds | 1985 | ||
| Dark Desire | 1987 | ||
| Tana Maguire | 1987 | ||
| Chalet of the Devil | 1988 | ||
| One Man Too Many | 1988 | ||
| The Jewelled Darkness | 1989 | ||
| Venetian Masque | 1991 | ||
| The Royles | 1992 | ||
| Dangerous Loyalties | 1992 | ||
| The Princess Royal | 1994 | ||
| Heir to the Throne | 1995 | ||
| Emerald Flame | 1996 | ||
| The Wine-dark Opal | 1997 | ||
| Tiger's Eye | 1998 | ||
| A Splash of Rubies | 1998 | ||
| Return to Moura | 1999 | Moura | |
| Golden Gate People | 2000 |