Subdivision is the twenty-eighth episode of the American television series Prison Break and is the sixth episode of its second season. It is written by Monica Macer and directed by Eric Laneuville. The episode was first broadcast on September 25, 2006 in the United States and marks the first appearance of Silas Weir Mitchell, who plays Charles "Haywire" Patoshik, in the second season, despite the fact that Haywire is one of the eight Fox River escapees.