The Thingy The Trap Door : Season 1 Episode 10
TV-Y7 (FV) ITV 5m
Aired: October 17th, 1986 @ 12:00 AM EST on ITV
Berk is trying to nail the Trap Door down, but it's no good - a large peculiar looking creepy thing comes popping up and changes Berk, Boni and Drutt into all sorts of different shapes.
