Prison Break Season 4

Season 4

The fourth season starts with Michael avenging Sara's "death", before learning that Gretchen did not kill her as he thought. Michael also learns the truth about Whistler, that he has secretly been working alongside Mahone to take down the Company. A Company operative takes Whistler's life shortly after this. Sona has burned down and Sucre, Bellick, and T-Bag have escaped during the chaos.

After returning to Chicago to look for Sara, Michael is arrested and recruited by Don Self (Michael Rapaport), a Department of Homeland Security agent, to help bring down the Company in exchange for his freedom. Lincoln, who was arrested in Panama is transferred to Chicago, and along with Mahone, Sucre, and Bellick with whom a deal is made. Also joining the group are Sara, who escaped from Gretchen which resulted in Gretchen's own captivity by the Company, having failed to secure a valuable item, and Roland (James Hiroyuki Liao), a hacker who was assigned to help them after getting arrested for identity theft.

Together, they devise a plan to retrieve Scylla, thought of as the Company's 'little black book', from the Company that will help to destroy them. In the meantime, Wyatt (Cress Williams), an agent from the Company, attempts to track Michael and Lincoln down and T-Bag heads North to the US with the "Birds" book in his possession. Michael also begins to experience some troubling health problems. On their way to Scylla, Brad Bellick sacrifices his life so that the other members of the team can reach Scylla. The general discovers that Gretchen is not on his side anymore, but does not kill her for the sake of their daughter Emily.

Michael must undergo surgery or he may die soon, and T-Bag is getting impatient for the money that he is supposed to get in exchange for Scylla. Sucre is shot once and is saved by Sara, who performs surgery on him immediately. It turns out Michael and Lincoln's mother is still alive and working with the company and has Scylla, and according to a trailer in the final six episodes Michael will be working against The Company, Lincoln, and his own mother trying to stop them from controlling Scylla

Sara Tancredi Returns to Prison Break for Season 4

Sarah Wayne Callies is returning to Prison Break: "Prison Break is bringing back Dr. Sara Tancredi, Sarah Wayne Callies, as a regular character for season four. Olmstead makes it clear that isn't Sara's head after all, and she's been alive, although not necessarily well, this whole time."