Sara is arrested for the murder of Christina Scofield during her wedding to Michael. She is sent to a brutal women's penitentiary where the General has put a bounty on her head.
A multi-way battle erupts in Miami between Michael, Lincoln, Christina, and the General's forces. Each faction tries to outsmart the other to gain sole possession of the device. Episode 19: "S.O.B."
| Character | Actor | Team Role / Status | | :--- | :--- | :--- | | | Wentworth Miller | Mastermind; suffers from a life-threatening brain tumor. | | Lincoln Burrows | Dominic Purcell | The enforcer; Michael's older brother. | | Alexander Mahone | William Fichtner | Former FBI agent; haunted by his past with The Company. | | Fernando Sucre | Amaury Nolasco | Loyal friend and driver. | | Brad Bellick | Wade Williams | Former Fox River guard; killed in a heroic sacrifice. | | Theodore "T-Bag" Bagwell | Robert Knepper | Operating independently, aligning with Gretchen Morgan. | | Sara Tancredi | Sarah Wayne Callies | Revealed to be alive; returns to aid Michael. | | Donald Self | Michael Rapaport | The morally ambiguous Homeland Security agent leading the team. | | Gretchen Morgan | Jodi Lyn O'Keefe | Former Company operative; teams up with T-Bag. | | Roland Glenn | James Hiroyuki Liao | A tech expert and "data thief" brought in to crack the security. | index of prison break season 4
The most painful aspect of Season 4 is its relentless accounting of loss. The show’s earlier seasons thrived on brotherly loyalty; Season 4 runs a ledger of betrayal. Characters like Alexander Mahone, once a pursuer, becomes a hunted man trying to index his own sins to earn redemption. The death of Brad Bellick—sacrificing himself in a pipe to save the group—acts as a morbid entry in this index. He pays off his cruelty from earlier seasons with his life. Similarly, the tragic killing of Gretchen Morgan and the final sacrifice of Michael Scofield himself turn the season into a balance sheet where every virtue has a price. The index does not lie; it tallies the debt, and by the finale, the Scofield group is bankrupt of innocence.
The core team for this season brings together a mix of key players and new faces: Sara is arrested for the murder of Christina
Retrieving "Scylla," The Company's digital black book, in exchange for full immunity.
Michael's health deteriorates due to a brain tumor. The team uses the GATE tunnels to bypass massive underground water pipes to reach Company headquarters. Each faction tries to outsmart the other to
Christina Scofield (Lincoln and Michael’s mother) is revealed to be a high-ranking Company operative, creating a deep emotional conflict.
Back from the dead, Sara serves as the medical support and emotional anchor for Michael.
– With Scylla out in the open, hotel assassinations and street-level chaos erupt in Miami as Michael outsmarts his mother.