"Behind the Walls" is a special episode of Prison Break, summing up the first 7 episodes, including behind the scenes footage and cast commentaries. Background information on the show and the main characters is provided. In the United States and United Kingdom, this episode was shown after the 7th episode - Riots, Drills and the Devil Part 2, while in Australia, a slightly edited version of this special aired on April 12, 2006 in between episodes 10 and 11. This episode was released on an exclusive "promotional bonus DVD" that could only be received at Target with the purchase of the Prison Break Season 1 DVD in the United States. Mark Thompson narrated this episode.
Wentworth Miller and Dominic Purcell talk about their characters and the relationship between Michael Scofield and Lincoln Burrows. The crew talks about the tattoo that is integral to Michael's plan. Robert Knepper, Peter Stormare and Wade Williams talk about being the villains of the show as T-Bag, Abruzzi and Captain Bellick respectively. Amaury Nolasco, Stacy Keach, Muse Watson talk about their roles as the good guys.
The conspiracy is explored tentatively. Robin Tunney and Sarah Wayne Callies talk about their roles as Veronica Donovan and Dr. Sara Tancredi respectively. The story and structure of the show are discussed. Marshall Allman talks about LJ and familial love. The cast emphasizes on the importance of filming in an actual prison and reveals their prediction on future episodes.