identity be not a horror flick . this be a mix of several genre and from thriller and to mystery and a who wouldunnit with gore . but still a very surprising movie . normally i do not respond well to movie who lie to the audience and who show a whole story and suddenly and in the end and without warn just say oh well and after all it be nothing like that at all and the guy be just asleep . hitchcock once say you should never lie to an audience and you should never show something that isn not true . it one thing to tell a lie in a movie and the other be to show it to the audience a if it be the real thing . it the easy trick in the book and of course you will be surprised and anybody will . to understand it good see the difference between the usual suspect and seven . the first show a story that wasn not there and in the end pull a rabbit out of the hat ( easy . ) . the other build up to an explosive and unexpected finale without any cheap shot and it just carry you through . with identity the movie suddenly pull a fast one on you and leave you wonder . but mangold doesn not give the twist at the very end and and keep a tense film until the last frame . it a worth see and inventive film and with a great cast to back it up .