Michael and Lincoln go house-hunting in Utah to find Westmoreland’s hidden money; T-Bag shows his particular brand of Southern hospitality; Haywire finally re-surfaces; Sucre finds a familiar face on the road; Mahone’s interest in the legend of DB Cooper leads him closer to the escapees.

Lincoln, Michael and Sara find the evidence they need to expose the conspiracy; Mahone forces one of the escapees to draw Michael and Lincoln out into the open; T-Bag's visit to a psychiatrist's office is more than therapeutic; Bellick is dispatched south of the border; and Kellerman sets his sights on the President.

Lincoln is determined to reunite with LJ, who is suspicious of his good fortune in Arizona; Michael, C-Note, Sucre and T-Bag’s hunt for buried treasure finally pays off; Kellerman has a change of heart just as Sarah is targeted by The Company; and Mahone forces Tweener to make a deadly choice.

Michael and Sarah become more than "strangers on a train" en route to confront the President; Mahone recruits an new ally in his attempts to capture the fugitives; T-Bag puts on a happy face when the welcome wagon arrives; and a fourth escapee takes a fall.

T-Bag goes postal to track down a missing Mrs. Hollander. Sucre's escape plane faces deadly turbulence. Bellick has the tables turned on him upon his return to Fox River Penitentiary. Michael and Lincoln are taken into custody to be transported back to Fox River, forcing Mahone and Kellerman to take drastic measures to ensure that the brothers make it to the prison morgue instead of their cells. And a surprising ally changes the game for everyone.

Lincoln must say goodbye to yet another loved one as he attempts to reunite with Michael; Michael's attempt to secure a getaway plane is grounded; Mahone deciphers a crucial puzzle piece; T-Bag gets his revenge on his tormentors; and Sarah and Kellerman have a tense face-off that leaves one of them gasping for their last breath.

As Kellerman prepares for an assassination, Michael is determined to confront the President and expose her secrets recorded on the audiotape. Mahone plays a tense waiting game with Sarah. T-Bag's lost luggage may prove a windfall for Bellick and Sucre. C-Note's drastic actions leave him hanging.

Michael, Lincoln and Kellerman face several roadblocks as they attempt to capture a protected Terrance Steadman; tragedy strikes the Mahone family; Bellick turns sour when a fellow inmate turns sweet on him; C-Note faces life on the run as a single parent; and T-Bag forces the Hollander family to play house with him.

Michael has his hands full when Sucre turns traitor and escapes with the newly found $5 million; Mahone is investigated by Internal Affairs regarding Tweener�s death; Lincoln is determined to reunite with LJ, but may be walking into The Company�s trap; and Sarah must fight for her life when the conspiracy tries to make history repeat itself.

A family reunion brings up painful memories of Michael's childhood; Mahone tracks an injured Coyote to lead him to the getaway plane; C-Note gets a taste of some bad medicine; and Bellick and Kellerman get the third degree from the women in their lives.

Michael races against the clock to rescue Lincoln and beat Mahone at his own end game; Sucre risks his life to save a missing Maricruz; Kellerman's testimony at Sarah's trial proves deadly; and T-Bag and Bellick find themselves up a Panamanian river.

Sarah weighs sacrificing herself in order for Michael and Lincoln to set sail to freedom; T-Bag's reign of terror continues south of the border as Bellick forces Sucre to track down the missing money; Mahone's actions finally catch up with him; and an escapee finally tastes freedom.

Michael and Sara realize that Warden Pope (guest star Stacy Keach) is the key to recovering information that will bring down "The Company"; Mahone corners another escapee; C-Note fears for his daughter's life; Sucre learns the dangers of hitchhiking en route to reuniting with Maricruz; and T-Bag walks down memory lane when he takes the Hollander family to his childhood home.

Michael, Lincoln and Kellerman take the airwaves hostage as they attempt to evade the authorities and get a message to a missing Sara; Bellick gets a surprise visit in Fox River's infirmary; Haywire resurfaces and lands in more trouble; Sucre takes his good Samaritan for a ride.

Michael and Sarah's reunion is anything but romantic as Mahone and Kellerman are determined to keep them apart-- permanently; Lincoln receives some help from a father figure as LJ meets a long-lost relative; Sucre plans a getaway with Maricruz; and T-Bag runs into a familiar face while holding the key to his freedom.

An author's latest manuscript is stolen; Terry, Jake and Rosa go under cover at a fantasy fiction convention to find the culprit; Terry admits he's been writing a book; Holt, Amy and Charles take a forensics course.

A visitor from Latvia causes Charles and Jake to investigate Nikolaj's family; Holt and Amy bring in famed forensic scientist Dr. Yee to help close a case for Rosa.

When a student's school reports a girl missing, the squad must track down a trusted family friend for answers; Benson gets a Mother's Day surprise.

Jessica and Louis are thrilled when a Chinese family moves into the neighborhood; Evan goes door-to-door collecting information for the census bureau; Eddie and Emery plot to find out when they can sneak over to use someone's pool.

Elaine tries to give Jessica tips on building a better relationship with Grandma Huang; Louis challenges Emery to a wrestling match to start the new year.