Guest Stars Elliott Cairnes as Guard Captain Patrick Troughton as Salamander Bill Kerr as Giles Kent Colin Douglas as Donald Bruce Mary Peach as Astrid Milton Johns as Benik Bill McGuirk as Guard in Corridor Margaret Hickey as Mary Carmen Munroe as Fariah Christopher Burgess as Swann Adam Verney as Colin Andrew Staines as Sergeant to Benik Bob Anderson as Fighting Guard
