As posted on the casting breakdowns:
[MARTY GREGG] 40-55, any ethnicity, he is senior counsel for the defense, a sharp, intelligent man who argues vigorously on behalf of his client, Sara. Convinced accepting a plea bargain is the best solution, a sympathetic Marty instructs Sara as to how to answer any questions posed by the judge...
What does Sara need a lawyer for? I bet this is how the producers get rid of Sara for a while so Sarah (Wayne Callies, who plays 'Sara') can take maternity leave. I see it now: Sara goes to jail or Sara goes on the run. Michael struggles to find her. Enter potential new love interest as has been reported? Prison Break has signed a new woman "with Michael's level of intelligence" as a series regular. Will she be for Mike, or for Linc, who is desperately in need of one?
Sara/Sarah better hurry back. Don't take the plea bargain!