London, 1873. Madeleine Brewster's marriage to Dr Lucius Everley was meant to be the solution to her family's sullied reputation. After all, Lucius is a well-respected collector of natural curiosities. His 'Small Museum' of bones and specimens in jars is his pride and joy, although firmly kept under lock and key. His sister Grace's philanthropic work with fallen women is also highly laudable.

However, Maddie soon finds herself unwelcome in what is meant to be her new home. The more she learns about both Lucius and Grace, the more she suspects that unimaginable horrors lie behind their polished reputations.

Framed for a crime that would take her to the gallows and leave the Everleys free to continue their dark schemes, Maddie's only hope is her friend Caroline. She will do anything to prove Maddie's innocence before the trial reaches its fatal conclusion.