A school camping trip to Snowdonia spells trouble for Sarah Jane and her friends, as they find themselves stranded in a harsh environment. What shadowy figure is watching them? How can Rani be in two places at once? And what secret does a nearby cave hold? Elisabeth Sladen narrates the story as Sarah Jane Smith. An exclusive audio story featuring Sarah Jane Smith, her son Luke and their friends, and read by a member of the TV cast. Written by Scott Handcock.