Contrary to what Wheeler and Feynman may have postulated, to us lesser mortals, time travel have and will always seem inherently paradoxical. The Terminator films completely ignored the paradoxes involved while the more recent Star Trek sidestepped them by calling on a plot device that could either have been brilliant or just plain lazy screenwriting. But the best time travel films have always been the ones that completely embraced the absurdities involved; case in point being the ultra low budget yet supremely brilliant 2004 indie, Primer.
Los Cronocrimenes (Timecrimes) is a lot like Primer even though it descends into slasher territory mid way through. Like Primer, it employs a single timeline albeit one populated by multiple copies of the protagonist. Apart from the usual problems involved with time travel, the fun also lies in figuring out whether to root for the original Hector (Hector 1) or the ones that follow him.
Pulp science fiction rarely gets better.
