Parker balks when ordered to kill an autistic savant, Walter, whose code-breaking skills are put to use by enemy spies to kill 20 CIA agents.

Teens playing video games are actually being used to pilot missiles.

Parker must save Talmadge, who is captured by commandos who intend to torture and kill him for information on Operation Backstep. But when he fails, only his newfound ability to loop time lets him complete the mission.

Parker must Backstep to prevent Ramsey's younger brother, mentally ill and off his medication, from killing a Senator.