When a Yorkshire farmer finds skeletal remains in one of his fields, the discovery launches one of the most bizarre cases of their careers for British detectives Hennessey and Yellich. The skeleton is that of a middle-aged woman, but the postmortem reveals that the head belongs to a different person than the rest of the corpse. Complicating the case even further is the fact that the skeleton has been buried for at least a decade. Hennessey and Yellich are more than willing to put in the plodding hard work required to solve the case, including interviewing still-grieving families and following up on even the most obscure clue. But it's the combination of uncanny deductive reasoning, imaginative leaps of logic, and a few lucky breaks that finally allow them to solve the strange case.