After being falsely accused of murder and spending 4 years in Bedlam, Apollo Greaves escapes with a little help from the Ghost of St. Giles. A beating has left him unable to speak and he poses as a simple gardner on the grounds of the ruined Hart’s Folley. The authorities are still looking for him and he must figure out who really murdered his friends before they find him. Things get complicated when celebrated actress Lily Stump and her son take temporary refuge in his garden.