A haunting historical mystery perfect for readers of The London Seance Society and A History of FearEdinburgh, 1826. Isobel Tait does her best to raise her young son Thomas alone, but yellow fever has left him with a scarred heart. Even a specialist, the renowned Dr.Connall Burnett, can do nothing for him. Isobel decides to make the most the remaining time with her son. Until he goes missing.A chance visit to Dr. Burnett's collection of specimens elicits a horrifying realization: there, in a small jar among stuffed lizards and misshapen bones, is a new addition. A tiny human heart.The use of stolen bodies by Edinburgh's medical men is a controversial but open secret. But she can't shake a horrible suspicion that the doctor's a proxy killer obsessed with his quest for specimens. Determined to find proof, Isobel goes undercover as a maid in Burnett's house and soon becomes the keeper of his specimens.She'll have to gather evidence, must protect his patients, and exact justice—and not get caught.