In the world of Prison Break Dr. Sara Tancredi not really dead

Sara Tancredi is not dead in the long run of Prison Break . While she appeared to be brutally killed in Season 3, she returned as a series regular in Season 4 and remained a central character until the show's final revival. The "Death" in Season 3

: In reality, actress Sarah Wayne Callies was pregnant and could not reach a contract agreement with the producers at the time. Because they couldn't film with her, the writers chose to "kill" her off-screen using a body double and a prop head. The Truth Revealed

: She played a key role in bringing down "The Company" and eventually married Michael. The Final Break

Massive fan backlash and a new contract agreement led the producers to "retcon" her death for Season 4. The Explanation