Still reeling from his realization that Walt is Heisenberg, Hank suffers a panic attack while driving home. While he recuperates, Hank demands that all the materials on the Gus Fring case be brought to his house for review. Jesse has trouble facing all that he's done, and worries that Walt has had Mike killed. Walt's cancer comes back, and he returns to chemo. He also discovers a tracking device on his car, leading to an explosive confrontation with Hank.