The Enid Blyton Adventure Series

Book 5: The Mountain of Adventure (Part 3) (1x15)

Air date: Aug 18, 1996

After attempting to rescue Philip from the Mountain, the children try to escape and discover the anti-gravity cavern. Bill and Allison are in their car when the Mountain rumbles. When Bill sees a helicopter landing he decides to interrogate the pilot. The guards have discovered that Philip is not with Alexai and set off the alarm which places the children in enormous danger.