Sarah Tancredi was decapitated during Season 3 of Prison Break ... What would you say if you saw her come back in Season 4? Would there be any logic to that?
Well, there might be ... when Link took a look at the head in the box in S3, he only took a tiny glance and we also got the feeling that Sarah got killed ... well, it seems that that head was of a female, but not Sarah! 'Cause get this, Sarah is coming back in Season 4 of Prison Break!!! She'll be on board throughout the whole season too!
I'm not making this up! TV Guide did this interview with Prison Break executive producer Matt Olmstead and he spilled the beans! (After the Jump)

Yay! I'm glad that Sarah will be back! She's an important character and she definitely plays a good part in the series ... especially for Michael!

Olmstead told TV Guide: "once we realized that the emotional hook of Season 3 was going to be the death of Sara, when we didn't get the actress to do it, as soon as we wrote it and shot it, we realized that there was actually a way she could still be alive. Lincoln glanced at the head in the box for a split second. That could've been anyone. He wasn't about to pull it up from the hair and inspect it closely. And then we were fairly careful thereafter of references we made to that and who took credit for it and what was seen or heard, and we left it fairly [vague]. But initially when we realized that we never actually saw the character get killed, we just had that knowledge in our back pocket and moved forward with the narrative as we intended. Which was: she's out of the picture, Michael's [feeling guilty] and Lincoln is freaking out because if they did that to her, they could do that to his son. It really gave us a real push for the season".

Check out the whole interview here