This is a list of all the episodes of The Trap Door. The claymation animated television series began in 1984 and ended in 1986, running for two series of 25 and 15 episodes.

Selected episodes were made available on VHS. All 40 episodes are now available on a single DVD released February 21, 2005.

Summary

Series		|Originally aired	DVD release date
		Region 2
	1	25	1984 1984 in television This article is a list of television-related events in 1984.-Events:*January 9 – Wendy's "Fluffy Bun" ad first airs, which propels Clara Peller and her "Where's the beef?" catchphrase to national prominence....	February 21, 2005
	2	15	1986 1986 in television The year 1986 in television involved some significant events.Below is a list of television-related events in 1986.For the American network television schedule, please see 1986-87 American network television schedule.-Events:-Debuts:*September 6 –...	February 21, 2005

Series 1 (1984)

Title	|Production code		1984		1
An odd, yellow creature emerges from the depths of the Trap Door and eats the Thing Upstairs's breakfast. Then a big, angry red monster also escapes and chases Berk, only to be scared off by its own reflection. The yellow creature is then used as a makeshift meal for The Thing Upstairs by Berk.
"Slither, Wriggle and Writhe"	1984		2
Berk is putting up shelves. After breaking the wood he was trying to use, he tries to take some from the trap door, only to be attacked by a tentacle thing.
"Food for Thort"	1984		3
The Thing Upstairs' favourite vegetable Thort has grown to a dangerous size. Whilst looking for worms Berk releases a swarm of stinging wasp things from the Trap Door; luckily, he soon finds out that Thort likes to eat them.
"Lurkings"	1984		4
Berk goes fishing with a reluctant Boni, leaving the trap door open as usual. He is followed by Rogg, a friendly thing, who emerges from the open Trap Door.
"Gourmet's Delight"	1984		5
Berk makes a gourmet dinner, leaving the kitchen in a mess. An invisible thing called Bubo emerges from the Trap Door and causes mischief.
"Creepy Crawly"	1984		6
A giant spider terrorises Berk.
"The Big Thing"	1984		7
Rogg takes Boni to the castle battlements to hide from Berk.
"Ghoulies"	1984		8
Berk finds a spell book and mistakenly summons some ghosts.
"The Dose"	1984		9
The Thing Upstairs has a cold, so Berk makes up some medicine. A green thing emerges from the Trap Door and drinks it.
"The Thingy"	1984		10
Berk nails the trap door shut, only for it to be immediately broken open by a mischievous powerful pink thing that begins changing everyone's shape.
"Don't Let the Bed Bugs Bite"	1984		11
Berk goes to sleep but something horrid emerges from the Trap Door and kidnaps Boni. Berk goes down to rescue him. This is one of two episodes which is revealed to be a dream at the end, the other being "Moany Boni".
"Fester Rancid"	1984		12
Bubo (now coloured yellow after being pelted with scunge in "Gourmet's Delight") returns, and torments Boni and Drutt, eventually running off with Boni and using him as a drum.
"The Pain"	1984		13
The Thing Upstairs has toothache so Berk goes to sort it out. Drutt wedges open the trap door so he can eat some worms, inevitably releasing a hungry slug thing which decides to eat him instead. This episode is centered on Drutt trying to escape from the creature.
"The Little Thing"	1984		14
A noisy little thing has escaped and Berk must catch it before it wakes the Thing Upstairs.
"Don't Open That Trap Door"	1984		15
Whilst cleaning out his cupboard Berk finds an old radio and all the monsters (past and future) emerge from the trap door to dance to the theme tune. This episode acts as more of a music video of the series.
"Junk Food"	1984		16
Rogg returns and eats all the garbage; he then causes trouble by going up in the lift to the Thing Upstairs's room.
"Yechh!"	1984		17
Something horrible escapes and lays its eggs. Little things hatch quickly only to pop almost immediately, causing havoc for poor Berk.
"Flyin' Wotsit Fingy"	1984		18
Berk is trying to take a photograph of Boni and Drutt but gets interrupted by a green flying bat thingy.
"Strange Goings On"	1984		19
Berk is taking everyone on a picnic but has to scratch the Thing Upstairs before he leaves. While he's gone something pulls Boni down the trap door. This episode is centered on Boni and his experiences through the trap door caverns then the swamp.
"Midnight Snack"	1984		20
Whilst everyone is asleep four near-identical greedy things emerge and raid the kitchen, causing a mess.
"Nasty Stuff"	1984		21
Berk makes some medicine for his headache, but after drinking it he turns into a horrible monster.
"Sniff That"	1984		22
Something with a lot of eyes sneaks up on Berk while he's trying to unclog a drain. Another thing that sucks things into its mouth climbs out too, and in the end solves both his problems.
"Vile Pile"	1984		23
All the rubbish Berk keeps throwing down the trap door comes to life and starts spitting slime at him.
"Slightly Weird"	1984		24
Berk tries to pick mushrooms for the Thing Upstairs's breakfast, until one of them runs off.
"Bye Bye Berk"	1984		25
Fed up with running around after the Thing Upstairs, and fending off the trap door monsters, Berk leaves.

Series 2 (1986)

Title	|Production code		1986		26
Bubo (in his final appearance in the programme) comes up from the trap door once again and starts a scunge fight.
"Oh Globbits"	1986		27
After Berk bungs up a burst water pipe with a worm (though the worm works itself free), he has to get rid of a giant green flying sponge that came out of the trap door.
"Moany Boni"	1986		28
A purple, devil-like horrible thing with supernatural powers comes up from the trap door and starts casting annoying spells on everyone. Boni gets a body (and starts making goat noises), Berk changes orange, then red, then grows large, and Drutt continuously changes colour (green, yellow, and blue).
"The Horrible Thing"	1986		29
Berk, Boni and Drutt play Hide and Seek while the Thing Upstairs is on holiday, until a horrible custardy yellow monster comes up through the trap door and interrupts.
"Not Very Nice"	1986		30
One of the Thing Upstairs' eyeballs falls down the trap door and Berk has to go after it.
"Bugs"	1986		31
Berk and Boni have problems with lots of creepy crawlies coming out of the trap door. In a parody of The Pied Piper of Hamelin The Pied Piper of Hamelin The Pied Piper of Hamelin is the subject of a legend concerning the departure or death of a great many children from the town of Hamelin , Lower Saxony, Germany, in the Middle Ages. The earliest references describe a piper, dressed in pied clothing, leading the children away from the town never... , Berk uses a bugpipe to lead the creatures far away from the castle.
"Yum Yum"	1986		32
Berk loses patience with Drutt and throws him down the trap door, but he eventually decides to get him back by fishing him out. Unfortunately, Berk fishes out a red horrible thing that looks cute but, as Boni finds out, is actually anything but.
"Birthday Surprise"	1986		33
It's Boni's birthday, so Berk makes a cake for him, and Rogg also joins the two for the party. Drutt is hiding, but for what reason?
"The Stupid Thing"	1986		34
While Berk is giving the Thing Upstairs a slime bath, Drutt mistakenly pulls up a dinosaur-like thing from the trap door.
"Boo!"	1986		35
Berk throws rubbish down the trap door, filling it up to the top, but this summons ghosts that Berk thinks are after him.
"The Lump"	1986		36
There is a rotten smell in the castle cellar and Berk investigates, he finds the source of the smell; something pink and smelly came out from the trap door. Rogg comes up and tells Berk, Boni and Drutt that it is a "Lump", and it proceeds to make lots of noise.
"The Splund"	1986		37
The "Splund" of the title comes out of the trap door and teases Boni and Drutt, while Berk is sewing the Thing Upstairs' pyjamas.
"Nasty Beasty"	1986		38
It is the middle of winter and Berk has to mend the Thing Upstairs's heater. Rogg comes up from the trap door with a green fuzzy thing stuck to him. This is the last time that the Thing Upstairs is heard, with the following episode being the last time he is actually referred to.
"What a Weirdo"	1986		39
A pink worm-like thing comes up from the trap door and eats Boni, Drutt's babies, the Thing Upstairs' dinner, and Drutt (in that order). Only Berk can rescue his friends and save the day.
"The Big Red Thing"	1986		40
The series finale. The red thing from episode one returns to cause chaos, and Rogg chases it into the swamps and confronts it.