Footage from behind-the-scenes of Mission Impossible: Dead Reckoning Part One is blowing people's minds - because every dangerous stunt you're going to see on screen was actually real. In the side-by-side of Tom Cruise filming vs the final edit, he can be seen hanging off a train which as it turns out, wasn't a green screen at all, and was filmed by the actor himself in Norway. Mission Impossible: Dead Reckoning Part One comes out on 10 July. Click here to sign up for our newsletters