In an extended and much more violent version of the previous trailer for the third Riddick flick, Vin Diesel is back and trapped on a planet full of alien predators, and when he sets off an emergency beacon for help, another wave of mercenaries, and someone with a particular motivation, show up to capture him. Sure, like they have any chance at all against a guy who can send a blade through a guy’s head with a kick while being restrained by chains. This one opens in September.