The Forgotten Garden shifts back and forth through time to solve a mystery about a four year old girl Nell; abandoned and waiting alone on a dock in Australia for parents who never come. The only link to her past is a little white suitcase the child carried when she was found.
Nell embarks on an adventure and attempts to piece together the mystery surrounding her past. Her travels lead her to Blackhurst Manor, delving deep into a family's secrets and purchasing a cottage in Cornwall near the Manor. Before she can solve the mystery of her past, Nell dies but her grandaughter Cassandra takes up the quest. This is a fairytale-like novel with old houses and hidden gardens all containing secrets and surprises.