I received this book as an ARC from BookishFirst in exchange for an honest review.
Wow! What a great book. Jamie and Emma are sisters. One night, during high school, Jamie convinces Emma to take her babysitting job so that Jamie could go to a party. Emma babysits and is stabbed while babysitting. She is cognitively impaired from the attack.
Twenty years later, their mother dies and Jamie comes home with her own daughter to look after Emma, her older sister. Jamie and Harley move into Jamie's childhood home and begin taking care of Emma and their mother's estate. Harley enrolls in the same school Jamie and Emma attended and befriends the daughter of one of Emma's classmates. One night - at the same house where Emma was attacked - someone enters the home and attempts to attack the babysitter.
Cooper Haynes was a classmate of Emma's and is now a detective in the town. He begins looking into Emma's attack with Jamie's help. When someone else is attacked and another person may have been murdered, Cooper and Jamie begin wondering if the two attacks are linked.