The prison riot escalated further, with Michael desperately crawling through the ventilation system toward the infirmary. Inmate Gus warned Warden Pope that the air conditioning must be restored immediately, or the hostages—Bob and Sara—would be harmed. Sucre repeatedly warned "T-Bag" not to hurt Bob before climbing into the tunnel to continue digging. Abruzzi, seeing the escape route for the first time, joined in the effort to break through the concrete wall.
The Governor of Illinois, Sara's father, arrived at Fox River with the National Guard. He made it clear to Pope that he didn't care how many inmates died in the riot—Sara's safety was his only concern. Michael finally reached the ventilation grate in Sara's office and, using the smoke from burning papers as cover, pulled her into the ventilation system.
Meanwhile, Nick and Veronica arrived in Washington, D.C., where they discovered that the victim, Steadman, had an energy policy that threatened powerful oil industry interests. Just then, they received a threatening phone call.
In a dark, steam-filled room, Lincoln fought with Turk, who eventually fell from a 20-foot platform to his death. Even in his final moments, Turk refused to reveal who was behind the plot to kill Lincoln.
Back in the tunnel, Sucre and Abruzzi finally broke through the concrete wall, bringing the escape within reach.
With Michael's help, Sara escaped the cellblock through the ventilation system. As the riot began to subside, "T-Bag" ignored Michael and Abruzzi's warnings and stabbed Bob to death in the chaos.
In the ambulance, Sara—still shaken but safe—began to wonder how Michael knew the prison's layout so well.