In Season 3, Episode 4 ("Good Fences"), a ruthless Company operative named Gretchen Morgan grows frustrated with Lincoln’s attempts to rescue Sara and LJ. To send a terrifying message and force absolute compliance, Gretchen leaves a cardboard box for Lincoln in a garage.

But the question that still haunts fans is simple:

For four seasons, Dr. Sara Tancredi was the moral compass of the show—and Michael Scofield’s great love. But her journey was far from smooth. From Fox River to Sona, she faced addiction, incarceration, and the ruthless Company.

So, to answer the question: