The crumbling Gothic mansion of Thornwalk, long-term home of the Gilbert family, is being handed over to a chain of luxury ‘historic’ hotels. Millions will be spent in its restoration. But for every ‘improvement’, what will be lost? What value can there possibly be in a threadbare carpet, a tarnished spoon and a thousand empty jam jars? Before the hotel people arrive, with their clipboards and their skips and their bottles of bleach, Maximus, loyal guardian of the Gilberts’ legacy, invites us on a final tour of the once-stately home, where each room holds a secret. From the bolt on the blue room door to the tiny dents in the bars at the nursery window. These are the keys that will unlock the lives of the five fatherless Gilbert children.