Cillian Murphy to star in Andrew Niccol's 'I'm.mortal'

Cillian Murphy is working on a deal to star in Andrew Niccol's sci-fi flick "I'm.mortal." Amanda Seyfried and Justin Timberlake are already on board, and Fox and New Regency are developing the flick.

The movie is set in a world in which people stop aging when they hit the age of 25. Time is the most precious currency now, and the rich are immortal. Everyone else is struggling. Sounds intriguing, right?

More specifically, the plot follows a ghetto rebel who is framed for murdering a rich dude and goes on the run with a hostage (played by Seyfried). They later discover love is more important than anything...

Heat Vision says Murphy plays a member of the Timekeepers, an organization controlling time. Murphy can currently be seen in "Inception." He's got "Hippie Hippie Shake" coming soon.