I'm torn with how I feel about this. It's a perfectly fine thriller, but there's nothing that made me go WOW! I guessed the campus killer's identity immediately and I felt that some of the treatment of Charlie was cliche and almost offensive. But I loved how the chapters really made me feel like I was in a movie - definitely intentional on Riley Sager's part. And there was 1 twist that I didn't see coming that redeemed the book for me a bit.

Overall it's fine, nothing *too* special, but I wouldn't chalk it up as a waste of time.