The Lantern Men by Elly Griffiths

For the past two years, after leaving her job at the University of North Norfolk, Ruth Galloway has been a professor at Cambridge University where she lives with her boyfriend, Frank, and daughter, Kate. She finds herself drawn back into helping the Norfolk police, especially DCI Harry Nelson, when convicted killer Ivor March tells Nelson he will divulge where two other women whom March is suspected of murdering are buried, but only if Ruth will do the excavation work. Ruth ends up finding two sets of remains at the site, as well as an older set of bones. In The Lantern Men the reader follows Nelson, his team, and Ruth in their journey to uncover who is responsible for the deaths. This latest book in the Ruth Galloway series will be published next month.