A trip to the races in search of the next of the Company's cards has potentially devastating consequences when Mahone is arrested, putting the whole gang at risk.
In the televisual equivalent of a rollercoaster ride, the deadly tug-of-war over Scylla intensifies, culminating in Michael falling into Company hands.
As the gang deals with Don's betrayal, Linc is captured and Don forces Gretchen to help him find a new buyer for Scylla.
Michael enters surgery, Linc and Sucre race against the clock to retrieve the Holy Grail of their mission, and Scylla's game-changing secret is revealed.