Javon Johnson

Sara considers whether she should help Michael with his plan, Michael betrays Warden Pope, and Veronica finds evidence that points her to Montana, but realises that her closest ally may actually be her greatest enemy.

Lincoln worries about Michael's sanity while Michael is having trouble remembering some parts of the prison schematics, and Sucre has to conceal the hole in the guard's break room.

Michael, Lincoln and the inmates risk life and limb, the Vice President fears she will lose her command if not her life, and Veronica tracks down the most significant piece of evidence to prove Lincoln's innocence.

The escapees and Dr Tancredi are shocked when they learn the identity of Michael's visitor, who brings with her a very important piece of the escape plan.

With Lincoln's execution now just a day away, Michael looks for a way to get him out of solitary confinement in time for an escape. Meanwhile, Veronica comes out of hiding and gains an ally.

Westmoreland takes drastic action to prevent Bellick from unravelling their plans, forcing the inmates to speed up their escape, Michael begs Sara to help him, and Veronica is betrayed by Nick.