Prison Break is in its fourth & final season. The final 6 episodes will air starting Friday, April 17, 2009 in the USA. (Tue., April 21st in the UK). The show stars Wentworth Miller as Michael Scofield, Dominic Purcell as his brother Lincoln Burrows, Sarah Wayne Callies as Dr. Sara Tancredi, and William Fichtner as Alexander Mahone.
She played Sara Tancredi, the prison doctor in season one who helped escapee Michael Scofield. Killed off in season three, she came back to life in the fourth and final season of "Prison Break" due to fan backlash. She went on, of course, to play Lori Grimes, the sheriff's wife on "The Walking Dead."