Riots, Drills and the Devil: Part 2 - S1-E7
Continuity mistake: When the Governor arrives his motorcade is on the grass. We then see the warden tell Belleck not to say anything and it cuts back to the motorcade that is just joining the grass. (00:11:20)
English, Fitz or Percy - S1-E5
Continuity mistake: Abruzzi grabs Schofield by the collar when confronting him in the canteen and has a finger raised in one shot but not in the other. (00:11:50)
Continuity mistake: The blood mark the young inmate leaves on the concrete changes from the time its made until when its found. When its made it is just a small blotch. When Bellick finds it, it is a full on hand print. (00:10:30 - 00:14:25)
Answer: Don Self actually worked with Whistler before he died. And Whistler with the bird book actually knew where Scylla was.