Cassie who has had a bad incident in her past pretends be drunk at bars every night and when the guy takes her home turns the tables on them and hurts them. Carey Mulligan plays the role to perfection, she is so smooth and cunning and funny. Cassie one day meets a guy called Ryan and you think maybe shes found a nice guy finally but things dont quite work out they way you think they would. I think this film is fantastic, really witty and sharp dialogue and really omg moments you dont see coming. Carey Mulligan deserves an Oscar nomination. This is one of the best films of the last year.