Genre: Adventure

Michael gets medical attention from the most unlikely of places, and Charles Westmoreland returns to help uncover the true meaning of Scylla. Meanwhile, Lincoln and Sucre race to stop Gretchen before Scylla is lost forever.

Michael, whose condition is deteriorating, winds up in the hands of The Company who promise Lincoln that they can save Michael's life in exchange for a favor. Elsewhere, Gretchen and Self wind up with Scylla and a buyer.

It's up to Michael to hold the gang together after they find out they were betrayed by one of their own. Meanwhile, Gretchen is blackmailed by T-Bag's new partner.

Sara takes a hostage in a bid to secure Scylla. In the meantime, Michael and Lincoln finally meet the General while one of their members switches allegiance.