I loved the idea of a character not knowing if she committed a crime because her brain won't let her remember. 

Lucy has been believed to have killed her best friend and no one believed that she doesn't remember that night.

This book mixed with podcast script and "five years ago" look backs was page turning. I felt so bad for Lucy because of the people in her life that should have protected her in a DIFFERENT way than they did. I'm truly glad they got theirs in the end. Gripping thriller that you just don't want to put down