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|VHS Title||Release Date||Episodes|
|The Riddlers: Mossop Needs A Haircut And Other Stories||1991||Mossop Needs A Haircut, Siege of Riddlers End, Daft As A Brush, Holiday Plans|
|The Riddlers: Mossop The Hero And Other Stories (VC1264)||5 October 1992||Stones From the Sky, Lights Out, The Treasure of Riddleton End, Mossop the Hero|
|The Riddlers: The Riddlestone Necklace And Other Stories (VC1278)||8 February 1993||Mossop and Grimley Builders, Middler's Invisible Horse, A Brush with Mossop, The Riddlestone Necklace|
|The Riddlers: A Riddler at Last and Other Stories (VC1309)||5 July 1993||The Search For a Riddling Tree, Top Hat and Tails, The Honorary Riddler, A Riddler at Last|
|The Riddlers: Mossop The Thinker and Other Stories||5 July 1993||Mossop's Magic Cleaner, Tiddlup Doesn't Live Here Anymore, Mossop The Thinker, Learning To Teach|
The series centred on Marjorie Dawe and the two Riddlers (small humanoid creatures, portrayed by puppets, whose main aim in life was to "riddle things out") named Mossop (voiced by Richard Robinson) and Tiddler (female, but voiced by Mike Gallant), who inhabited her garden at Riddleton End. It would later be revealed that Tiddler was an orphan and had no other next of kin, so Mossop adopted Tiddler as an infant. Tiddler was not the latter's real name, but a title given to young apprentice Riddlers: once they achieved full Riddler status there would be a special (graduation type) ceremony, at which they would be given their 'real' name. Tiddler's training included being told stories by a Riddlestone, usually one of 'Ees-Up's Foibles' (Yorkshire dialect for Aesop's Fables) - she would then have to 'riddle out' the moral of the story.
When Tiddler had achieved full Riddler status (by getting the morals of twelve stories correctly) she chose to be called Tiddlup at the ceremony. Marjorie wanted to go to the ceremony but was told by Mossop that only Riddlers and Tiddlers could go as it was a Riddler law. In order to go, she became a tiddler and started to study as a tiddler.
Other characters featured in the show included Marjorie's neighbour, Mr. Montgomery Grimley (a gardener and odd-job man), and several other riddler characters - including another tiddler known as Middler, Mossop's brother Glossop, and Eesup, a story-teller. Marjorie's sister Monica was also featured as a recurring character. Many of the plots featured in the series revolved around the male characters making mistakes which would then be solved by the female ones.
226 episodes were produced and broadcast during the series' nine-year run. For much of its run, The Riddlers was produced by Ian Fell and directed by Chris Ryder (later a series producer). Later series were directed by Ann Ayoub. The executive producer was Chris Jelley.
All episodes were written by Rick Vanes (whose previous work for YTV included Puddle Lane, The Raggy Dolls and Mooncat). Ees-Up's Foibles stories were written by Shirley Isherwood. Neil Innes provided the music and songs featured. Puppeteer for Middler and Mossop, Richard Robinson, created the puppets and provided illustrations for the Ees-Up's Foibles stories. David Baker was assistant puppeteer series 1 through 6 and Garry Rutter for the show's last three years.
Many of the programmes were recorded in Yorkshire Television's studios on Kirkstall Road, Leeds, although some later episodes were filmed on location. Five VHS releases were issued by Video Collection International, one DVD was issued by Kids Club and several tie-in books were published.
An episode from the fifth series was broadcast on the CITV channel on 6 January 2013, as part of a weekend of archive programmes to celebrate CITV's 30th anniversary.
(These are in the correct series order as listed by ITV)