The Stone Circle by Elly Griffiths

Forensic archaeologist Ruth Galloway is consulted when some bones are found at a local dig. The bones turn out to be fairly recent, so the police are called in, lead by DCI Nelson. Ruth and Nelson share a personal history that began many years ago when they met on a case, fell in love, and Ruth gave birth to their daughter, Kate, now 7. All the while, however, Nelson has been married to Michelle. The bones turn out to be from a girl named Margaret Lacey, who went missing during the royal wedding of 1981. When the person who was the prime suspect back then is found murdered, the case gets even murkier. Will Nelson and his colleagues find justice for Margaret? The Stone Circle will be published in May.