4x8 - Doctor Who Confidential

Visit The Doctor and Donna on the set of the eerie Library Planet, as they confront the monsters of the Dark, the vicious Vashta Nerada We examine the shadowy creatures that even the Doctor is terrified of, how they are created, and how a disused library in Swansea became the setting for all the universe's books, and look at the contribution of writer Steven Moffat to the new Doctor Who. Featuring interviews with David Tennant, Catherine Tate, Russell T Davies and Steven Moffat.