Where Memories Lie by Deborah Crombie

Dr. Erika Rosenthal thought all the pain in her life was safely buried in the past.  She and her husband David had escaped from Nazi Germany in time to escape the concentration camps that killed so many of their family and friends.  They started over in London where both were academics, only to encounter grief again when David was murdered, a case that has gone unsolved for decades. 

Now pain has found Erika again.  She encounters a Sotheby catalog of an upcoming auction, and there it is.  One of the most anticipated offerings is a diamond brooch created by a famous Jewish jeweler.  That jeweler was Erika's father and the brooch was taken from her during her escape in a horrendous act. 

She goes to her friend, Detective Gemma James.  Gemma goes to the auction house to inquire where the brooch came from but encounters only subterfuge and claims of anonymity.  Gemma plans to investigate further, and her determination is increased when the woman she spoke with at the auction house is run down that night and killed.  That case is assigned to her domestic partner, Duncan Kincaid and his team.  Duncan works on this recent case while Gemma is determined to get to the bottom of the decades old mysteries of David's murder and what happened to the brooch.

This is the twelfth book in the Gemma James/Duncan Kincaid series.  It is a nice mix of police procedural and the domestic lives of police inspectors as they try to have family and friends.  Gemma has ongoing family issues that she needs to resolve but they don't keep her from working on the case that is so near to her friend.  This book is recommended for mystery readers.