Emily Blunt has joined the cast of 'Looper'.
The award-winning actress - who shot to fame starring in 'The Devil Wears Prada' in 2006 - will join the likes of Bruce Willis and Joseph Gordon-Levitt, who have already been cast in the sci-fi thriller.
The time-travelling adventure follows the lives of a group of killers, who dispose of people sent from the future, so they can be disposed of without anyone realising who they are.
However, difficulties arise when Joseph's alter-ego works out that his latest victim is a future version of himself, and decides to let the man - played by Bruce - escape.
His future self is then forced to track down and kill a young boy, who will be the character's key to survival.
Producer Rian Johnson plans to begin shooting the complicated sci-fi drama in New Orleans in January, with Emily set to play the single mother of the young boy with the key to survival.
'Looper' is expected to hit screens by 2012.