Anna Kendrick and Blake Lively star in this crime thriller directed by Paul Feig. The film follows Stephanie Ward (Kendrick), a blogger who becomes friends with the glamorous Emily Nelson (Lively) after meeting outside their children's school. The pair begin to form a strong bond, only for Emily to suddenly disappear shortly after calling Stephanie asking her to do her a small favour. With no sign of her after days of searching, Stephanie begins looking into the secrets of Emily's past as she desperately searches for answers. The cast also includes Rupert Friend, Linda Cardellini and Henry Golding.