For fans of Gone Girl, Flynn's earlier book, Dark Places, is a must. If you've been gobbling up thrillers recently like I have, this book will hook you immediately and you won't see where it's taking you. Flynn has hauntingly interesting prose that always catch you off guard, and though the protagonist is twisted and often unlikeable, you're still propelled forward to find out exactly what happened.
If this interests you, you may also want to try The Girl on the Train by Paula Hawkins.
Recommended by Kim Anguish