<P> Sara Tancredi was introduced to the series as the daughter of the Illinois governor and the prison doctor who the protagonist frequently visits to obtain his insulin shot . The background story of the character, revealed in the sixteenth episode of the first season, was not actually conceived along with the original conception of the series . Callies commented in an interview that it was the "very first inkling" that she had about the character's past . Also in the same interview, the actress mentioned that during the production of the series pilot, she had suggested to Prison Break creator Paul Scheuring that "it would be interesting to play her as a recovering alcoholic". </P> <P> The character's continuation as a major role in the second season was a "surprise" to Callies since the second season revolves around the lives of the eight fugitives outside the prison . The actress states that it is "some of the most creative storytelling for women on TV right now" and that she was given "lot of latitude in establishing a sense of who (the character) is". As the characterization of Sara continues to develop, Scheuring describes the character as "one of (the series') strongest components". </P> <P> Towards the end of the production of the second season of Prison Break, Callies' pregnancy was announced . With the pregnancy not incorporated into the show, the story was written in such a way to account for Sara's disappearance during Callies' maternity leave . At the time Paul Scheuring commented, "It actually fits into what we were already planning ." He also claimed that the original treatment would have included "explanations for why she wasn't in the first (batch) of episodes" of the third season, later revealing that it would set up a planned 13 - episode story arc that would ultimately culminate with her character's death . </P> <P> However, due to Callies and the show's producers being unable to agree on a new contract, the character was suddenly "killed off" in the fourth episode, much earlier than planned . Her sparse appearances during the season (including the use of stand - ins with their faces obscured) and her gruesome, off screen death was the result of working around the inability to film additional scenes with the actress, as well as for dramatic and emotional impact . </P>

When does sara come back in season 3 prison break