While the Fox drama Prison Break centred on two brothers and their time spent attempting to escape various kinds of incarceration, the character of Dr Sara Tancredi was always a vital part of that equation. In a show drenched in testosterone, she brought a little balance to the proceedings – not least because she was very well written, and very well performed. It is great news, then, that the actress behind the character, Sarah Wayne Callies, is confirmed as returning for the forthcoming Prison Break sequel series – otherwise known as Prison Break - season five.