Virtuality (2009)

Twelve extremely-talented men and women have been chosen to be part of the Phaeton mission, a 10-year trek to explore a distant planetary system. To endure the stress of being confined to their high-tech vessel, the crew passes the time using advanced virtual-reality modules that allow them to take on various identities. But as the ship approaches a critical phase of their journey, a deadly flaw is discovered in the virtual system, forcing them to question whether someone onboard might be a killer.