Mahone and Kellerman determine to keep Michael and Sarah apart; a father figure helps Lincoln; L.J. meets a long-lost relative; Sucre plans a getaway with Maricruz; T-Bag runs into a familiar face.
Michael puts the moves on Mahone's wife, trying to dig up dirt on his pursuer; Lincoln and L.J. have an uneasy road-trip; C-Note's wife must choose between her husband and daughter; T-Bag gets an unwelcome surprise.
Sucre turns on the rest of the escapees and escapes with the $5 million; Internal Affairs investigates Mahone about Tweener's death; Lincoln determines to reunite with LJ but may be walking into a trap.
A face from the past haunts Lincoln on his execution day; Veronica raises the dead to prove Lincoln's innocence.
Lincoln says farewell to another loved one; Michael's attempt to secure a getaway plane goes nowhere; Mahone deciphers a crucial puzzle-piece; T-Bag gets revenge on his tormenters; Sarah and Kellerman have a tense face-off.