Heroes Unmasked is a behind-the-scenes documentary television series of the American television series Heroes, made by the BBC and narrated by Anthony Head in series 1–2, and in series 3 by former Heroes actor Santiago Cabrera. The show aired after an episode was shown on BBC Two, with one special episode that aired on a Saturday to coincide with the Heroes Catch-Up Weekend, through seasons one and two and for the "volume three" episodes of season three. A 65 minute special, narrated by Martin Freeman, accompanied the season one finale in addition to the usual episode of Unmasked, and an extra episode of usual length was broadcast a week before season two began. The show features interviews with cast and crew members as well as special effects artists discussing the process behind the creation of each episode as well as revealing plot backgrounds and future stories. It is filmed entirely on location at the current set used for the television show in the United States and is another incarnation of the format already used by the BBC for Doctor Who Confidential and Torchwood Declassified. First aired on 25 July 2007 on BBC Two following the first double episode of Heroes, the show attracted 3.1 million viewers. Discussion on the show is also carried over onto Heroes - the official Radio Show on BBC7. There is an episode of Unmasked for all Heroes showings during its run, except season two's "Truth & Consequences". Unmasked did not return for Volume 4.