The Dreamstone Season 2 Episode 13 - Return of the Nightmare Stone Episode Title:Return of the Nightmare Stone.Episode Description:The Nightmare Stone is discovered and the Urpneys beat the Rufus and Amberley to it. Urpgor's attempt to rid Zordrak of the Nightmare Stone gets the whole of Viltheed launched into the sky. Rufus and Amberley are rescued and return to the Dream Maker. The 13 episodes were written in Great Britain by Sue Radley, Martin Gates and John Antrobus.