The Girl I Used To Be / April Henry / 229 pages

Olivia Reinhart used to Ariel Benson. She grew up believing her father killed her mother, stabbing her nineteen times, dropping her three year old self at Walmart, then disappearing forever.  She had been adopted after some years in foster care after her grandmother died - hence the name change, but that didn't work out.  At seventeen, she is emancipated, has her GED, and works at a grocery store.  When a police officer and chaplain show up at her Portland apartment and tell her that her father's jaw bone has recently been found in the same forest where her mother was murdered; that they believe that he, too, was murdered at the same time; and that the investigation is being reopened, her life is forever changed.  Determined to find her parents' killer, she returns to Medford.  What happens next is an edge-of-your-seat whodunit with multiple suspects, compassionate confidants, and a cast of odd characters.  Loved the cover and although it is catalogued YA, it would be appropriate for middle schoolers and loved by them.