Edie Burchill is at loose ends. She has lost her boyfriend and her London apartment and is sleeping on her boss’s couch. Unexpectedly she learns that her mother has spent the early months of WWII as a young evacuee at Milderhurst Castle, owned by renowned author Raymond Blythe. Blythe was the author of The True History of the Mud Man, a childhood classic and Edie’s favorite book. Now the castle is crumbling and Blythe’s three elderly daughters live there in seclusion until they invite Edie into their home. Then mysterious disappearances and deaths are revealed and Edie sees how the past has impacted not just the Blythes, but her own past as well.