London, 1895. Daniel Wilson and Abigail Fenton have been hired by the Natural History Museum to find out who deliberately smashed the fossilised skeleton of a small dinosaur. At first Daniel is reluctant to take the case, pointing out that they deal in murders, not vandalism. But then one of the attendants in the dinosaur room is murdered, his body found tied to a dinosaur skeleton and a note pinned to him saying 'The price of betrayal'. As Daniel and Abigail investigate they must negotiate a web of legal and professional tensions. This is not going to be a simple case to solve...