The Snake On 99 (1959)
Zero in the Gate (1960)
Death in the Wrong Bed (1963)
Delphine, Be a Darling (1963) (writing as Laurie Stewart)
The Twelve Maidens (1974)
Serpent of Lilith (1976) (writing as Margot Villiers)
The Sword of Orley (1977)
Dance of Blood (1977)
Omega (1979)
Forcible Entry (1986)
Life and Times of a Modern Day Witch (1987) (with Janet Farrar)
Backlash (1988)

What Witches Do: A Modern Coven Revealed (1971)
Eight Sabbats for Witches (1981) (with Janet Farrar)
The Witches' Way: Principles, Rituals and Beliefs of Modern Witchcraft (1984) (with Janet Farrar)
A Witches' Bible (1984) (with Janet Farrar)
The Witches' Goddess: The Feminine Principle of Divinity (1987) (with Janet Farrar)
The Witches' God: Lord of the Dance (1989) (with Janet Farrar)
Spells and How They Work (1990) (with Janet Farrar)
The Pagan Path: The Wiccan Way of Life (1995) (with Gavin Bone, Janet Farrar)
Witch's Dozen (1996)
The Healing Craft: Healing Practices for Witches and Pagans (1999) (with Gavin Bone, Janet Farrar)
The Complete Dictionary of European Gods and Goddesses (2000) (with Gavin Bone, Janet Farrar)