Phillip Edward Van Lear

Casey finds himself in dangerous territory when working undercover to bring down a trafficking ring; Dawson realises that her life is about to change; a new candidate makes an unusual first impression.

Chief Boden is being investigated by internal affairs following complications at a call-out, and the crew become frustrated with the increased scrutiny.

Bellick leads the prison guards in their hunt for the escapees; Dr Sara is in rough shape following her overdose; Veronica is in an uncomfortable position with Terrance; T-Bag seeks an advantage.

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 mystery man reveals himself to Lincoln; Michael realises that Sara holds the key to the escape plan.