Penny Wanawake series
Penny is a 6ft beautiful black photographer and the daughter of a UN Ambassador.
- Penny Black (1984) (#56 among The Top 100 Crime Novels of All Time)
- Penny Dreadful (1984)
- Penny Post (1985)
- Penny Royal (1986)
- Penny Wise (1988)
- Penny Pinching (1989)
- Penny Saving (1993)
Cassie Swann series
Cassie Swann is an expert bridge player in Bellington, England.
- Takeout Double (Also published as: Death Takes a Hand) (1993)
- Grand Slam (1994)
- King of Hearts (1995)
- Doubled in Spades (1996)
- Sacrifice Bid (1997)
- Dummy Hand (1998)
Others
- Misselthwaite (1995): an unofficial sequel to Frances Hodgson Burnett's novel The Secret Garden; also published as Return to the Secret Garden.
- Falling Angel (1998)
- The Italian Garden (1998)
As Susan Madison
- The Colour of Hope (2000)
- The Hour of Separation (2002)
- Touching the Sky (2003)