Stevens catches the bomber Derek Frost (Michael Arden), who leaves his wallet behind to fake his own death, and gets off at the last stop before Chicago. In one run-through, Frost kills both Fentress and Christina, and flees in a rented white van. Stevens remembers the license number and direction and the authorities use this information to catch the terrorist, preventing him from detonating the dirty bomb. The mission finished, Rutledge reneges on his promise, ordering Goodwin to wipe Stevens' memory for a future mission. Stevens convinces Goodwin to allow one more try, to save everyone on the train, despite Rutledge's insistence that everyone on the train had already been killed in the explosion.