The Last Time I Saw Her by Amber Garza

Two weeks ago, Dylan DiMarco and his sister Claire discovered Lauren Pascal’s body lying in a creek near his home.
Murdered.
Dead. Lifeless.
Today she is standing in the middle of the store where he works.
Alive. Breathing.
It’s not the first time he’s seen her lurking around. Following him. In life, Lauren had wanted nothing to do with him. In death, she won’t leave him alone.
He knows what she wants. What he has to do so he can finally be free.
With the help of the school’s bad girl loner Harley, Dylan sets out to solve Lauren’s murder. But when the lines begin to blur between finding justice and seeking vengeance, things take a dangerous turn.