Yet more undead. It'll be a dancing zombie musical next. But this time around, they're running rather than shuffling, and it's a zombie summer blockbuster with a bored-looking Brad Pitt called upon to save the world from the speedy flesh munchers. He's some sort of UN troubleshooter, we think – it's never properly explained what sort of UN operative he is. In fact, there's very little explanation of anything at all. So, it's best to turn off all mental faculties and savour the undeniably breathtaking set-pieces, notably hordes of the undead scaling a Jerusalem wall, and zombie chaos unleashed on a plane in flight.