I received a free copy of this book from Harper Collins in exchange for an honest review.

Cassandra is plagued with guilt when driving on a dark road one night, she doesn't stop when she sees a woman pulled over in her car. The next day, the woman is found dead. While Cass wonders if she should tell the police, she is also dealing with a scary dose of memory loss that could be connected to her late mother. As Cass continues on a downward spiral, she thinks the murderer is getting close to her and fears for her life.

This was a fantastic, lightning quick read that completely kept me glued in. I immediately was sucked into the story by asking myself what I would do in the same situation. Was Cass wrong not to stop or did she do what most solo female drivers would do, especially late at night? I found Cass's subsequent journey into memory loss intriguing and emotionally charged. Because of her memory issues, Cass quickly becomes an unreliable narrator which adds even more intrigue to the story. I really felt left in the dark for this book and though I had some of my own conclusions, I really had no idea what was going to happen.

Near the end, as things become clearer I was genuinely left gasping with shock when some things going on were revealed and my heart really broke for Cass and what she was going through. I was angry, sad and thrilled all at once and i could not put the book down until I'd read the very last page. i 100% recommend this book to anyone looking for an exciting, thrilling read that they can't put down.