Claire starts her first day teaching at a new school and meets her students, including Eric, a senior in her AP English class.

Des is happy to reteam with Mary following his stint in prison – but when a routine case leads to a devastating outcome, Mary questions whether she was better off…

In a corporate-controlled future, Spiga junior exec Ben Larson keeps secrets from family and co-workers; Laura, Ben’s wife, contemplates a life change; outsider Theo is offered a dangerous job.

Jack returns to CTU and has an emotional reunion with Audrey, while Curtis tracks the Russians and the stolen nerve gas. Walt sends in a hit man to silence Jack….