A 30 year old mystery… A 15 year old sleuth. Freshman Mackenzie Quinn wants nothing to do with the mysterious death of Cassidy Jones. But when her crush, Braden McGuire, declares he’s determined to uncover the truth, she is drawn into the cold case. The problem is her dad is the number one suspect. Things look pretty hopeless until her best friend, Travis Barns, loans her the secret diary of Cassidy Jones. His only stipulation is that she not share it with anybody else. But when her jealous boyfriend finds and exposes the diary, secrets come to life that could ruin MacKenzie’s whole family. Can she find a way to clear her father’s name and atone for her own mistakes before it’s too late?