Rich Komenich

Severide realises he shares a similar past with the lieutenant who has been helping out at the firehouse; Dawson shares a secret with Shay.

Michael Scofield intentionally gets himself incarcerated in order to use his skills as a structural engineer to break his brother Lincoln Burrows out of death row.

Michael, Lincoln and their fellow inmates run for their lives and their freedom, with Bellick in pursuit; Veronica races to Montana.

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

The tables are turned when one of the group's relentless pursuers becomes the pursued.

Michael must move up the breakout timetable; Michael looks to Sara for help; Veronica finds her life in jeopardy from an unlikely character.