Wells of Ythan
1. Ancient Dreams (1988)
2. Magic Casements (1989)
3. Shadow's Realm (1991)
4. Enchantment's End (1992)

The Past (1965)
The Water War (1966)
The Sundown Trail (1968)
The Outrageous Queens (1977)
The Mist Lizard (1977)
Bloodthirst (1979) (writing as Mark Ronson)
Ghoul (1980) (writing as Mark Ronson)
Ogre (1980) (writing as Mark Ronson)
Plague Pit (1981) (writing as Mark Ronson)
Hand of Vengeance (1983)
The Dark Domain (1984) (writing as Mark Ronson)
Whispering Corner (1989) (writing as Mark Ronson)

Grimalkin's Tales: Strange and Wonderful Cat Stories (1983) (writing as Mark Ronson) (with Judy Gardiner and Stella Whitelaw)
Not After Nightfall: Thirteen Stories to Haunt Your Dreams (1985)