Jeopardy - Series 3 - Episode 10

Children's drama series about a group of Scottish schoolchildren who encounter aliens. Now reunited with Gerry, Simon, Lucy and Harry decide that they must try to get to Maracoomba Island. Gerry says this is the mysterious Astrid where they believe that they will find the answer to their friends' disappearance. The group discover their faces on posters all over the area and Simon is recognised and challenged. Is the game up?