This is a special episode of unmasked about the Heroes world tour in London.
This BBC Two Heroes Unmasked special takes a look back at the success of the first season of Heroes.
The show also takes an exclusive peek at the much anticipated second season of Heroes, featuring interviews with all the main cast, including Milo Ventimiglia (Peter Petrelli), Ali Larter (Niki Sanders), Greg Grunberg (Matt Parkman) and the show's creator, Tim Kring.