Guest Stars Lynda Bellingham as The Inquisitor Michael Jayston as The Valeyard Tony Selby as Glitz Tom Chadbon as Merdeen Joan Sims as Katryca Adam Blackwood as Balazar Timothy Walker as Grell Glen Murphy as Dibber David Rodigan as Broken tooth Billy McColl as Humker Sion Tudor Owen as Tandrell Roger Brierley voices Drathro Uncredited Robert Goodman as Crew Member
