Danielle Campbell

A series of flashbacks to three years ago unveils how Lincoln, Sucre, T-Bag, C-Note and Dr. Sara landed in Fox River State Penitentiary, and what drove Michael to craft his elaborate plan to break his condemned sibling out of the prison.

Michael and Sara 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.

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.

Klaus (Joseph Morgan) turns to Davina (guest star Danielle Campbell) for help to learn more about a mysterious affliction affecting Hope (Danielle Rose Russell). On their wedding day, Freya (Riley Voelkel) and Keelin (guest star Christina Moses) make a tough decision about their future together, while Elijah (Daniel Gillies) is forced to confront a past memory of Hayley. Finally, Declan’s (guest star Torrance Coombs) growing curiosity in the city’s supernatural secrets forces Marcel (Charles Michael Davis) to step in.

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.