If you've been waiting for the next Gone Girl, the wait is almost over — A Simple Favour, a mystery thriller based off the Darcey Bell novel by the same name, looks like the thrill of the season. Starring Blake Lively and Anna Kendrick, it follows a fledgling vlogger who tries to solve the sudden disappearance of her glamorous but unknowable best friend, and — with the same unreliability that makes Gone Girl so addicting — you won't know who to trust until the very end. If you're aren't already captivated, then just watch the trailer.
Release date: Sept. 14