Emily Blunt has joined upcoming sci-fi Looper, Rian Johnson's latest feature.

The Brick director's twisty turny thriller is all about a crime syndicate in the future, who kill their victims by throwing them back in time and bumping them off when no-one knows who they are. But when one of the assassins realises he's been contracted to kill a future version of himself, things get complicated. Especially when that guy has his own mission to wipe out a boy who will then bring about his eventual salvation.

Where does Blunt come in? Well, she'll be the woman who gave birth to that boy. Fresh from The Adjustment Bureau, Blunt joins an already impressive cast - Johnson's crazy thriller has an experienced ensemble when it comes to weird timey wimey movies, namely Bruce Willis (Twelve Monkeys) and Joseph Gordon-Levitt (Inception).

Looper starts shooting in January. It'll start making sense sometime around 2012.