The Doctor is sentenced to fight Grun to the death and his attempt to escape leads to an encounter with Aggedor.
Quest roles:
Murphy Grumbar(Dalek Operator), Sonny Caldinez(Sskel), David Troughton(Peladon), Geoffrey Toone(Hepesh), Stuart Fell(Roga), Alan Bennion(Azaxyr), Terry Bale(Voice of Arcturus (voice)), Nick Hobbs(Wirrn Operator), George Giles(Guard Captain), Ysanne Churchman(Spider (voice)), Gordon Stothard(Grun)