The Inheritance - Andy Blake Mystery, #6

Mysterious graves, a golden pendant, a fourteen-year-old abduction, and a huge intestate inheritance add up to foul play and intrigue for Detective Andrea Blake. Two shallow and secluded graves are discovered practically in Detective Andy Blake's back yard. She has her hands full finding out who the elderly woman and younger man were, when, and how they died. Meanwhile, her partner is hiding a secret that may hold the answers but would likely end his career if exposed.
The two cases merge to a climax that will change Andy's life forever.