Biography
According to Wikipedia, wrote commissioned drama and music theater under the name Sandra Clark and romance novels under the name Sally Heywood as well as medieval novels under the name Cassandra Clark, but note that this doesn't match the names on some of the covers below.
Books by Sally Heywood
Dark Waters Rising
Murder at Beaulieu Abbey
Graveyard Alley
Graveyard Alley
Murder at Whitby Abbey Lib/E
Murder at Whitby Abbey
Velvet Turnshoe
Velvet Turnshoe
Ten Weeks That Changed England
Ten Weeks That Changed England Forever
The Alchemist of Netley Abbey
The dragon of Handale
A parliament of spies
A Parliament of Spies Cassandra Clark
The law of angels
Hangman blind
The red velvet turnshoe
Hangman Blind A Mystery
Jungle Lover
Love Island
Castle of Desire
With Love on Mother's Day
With Love on Mother's Day
Bride Of Ravenscroft
Love's Sweet Harvest
The Gemini Bride
Hazard Of Love
Today, tomorrow, and forever
A Fool To Say Yes
Moonlight Enough