Guest Stars Lynda Bellingham as The Inquisitor Michael Jayston as The Valeyard Tony Selby as Glitz Joan Sims as Katryca Adam Blackwood as Balazar Tom Chadbon as Merdeen Glen Murphy as Dibber Timothy Walker as Grell David Rodigan as Broken tooth Uncredited Kathleen Bidmead as Elder of The Tribe of the Free Guy Matthews as Time Lord David Rogue as Alphan Servants
