Lyvedon Manor is both a source of pride and a financial drain for Martin Frazer and his wife Suzanne. Martin, a barrister, hires Rosemary and Laura to restore his walled garden, which has fallen into disrepair. It's a big job, but there is a ready source of cheap labor - the inmates of the local prison. Rosemary is nervous about working with ex-cons, and her suspicions are confirmed when Martin's cousin Jim is found drowned in a nearby river. As Laura and Rosemary struggle to bring the garden back to life, events take a mysterious turn when just before the Coroner's Inquest into his death, cousin Jim is seen alive again.