An upcoming documentary is set to expose the hidden underbelly of children's TV as former cast and crew make shocking claims about the 'toxic environment' at Nickelodeon - including accusations of child abuse and 'pedophiles on set.'

Quiet On Set: The Dark Side Of Kids TV promises to 'pull back the curtain on an empire, built by creator Dan Schneider, that had an undeniable grip on popular culture' in the 1990s and early 2000s.

Schneider, who was described as 'Nickelodeon's golden boy,' is said to have 'launched the careers of child actors who became major stars' including Miranda Cosgrove, Jamie Lynn Spears and Ariana Grande.

But there was a much more chilling tale behind the scenes.

Here, FEMAIL digs deeper into the claims as Investigation Discovery gets set to launch its four-part docuseries.

Schneider, originally from Memphis, Tennessee, began working at Nickelodeon in 1993 as an executive producer when the channel was 'pushing the boundaries of kids entertainment.' 

'It wasn't there to educate you. We were there to have fun, to get slimed, to be entertained,' host of Double Dare Marc Summers said of the network. 

Schneider, who had started out in the industry in front of the camera, became involved with creating and producing some of Nickelodeon's biggest shows including Zoey 101, iCarly, Victorious, Drake & Josh, Sam & Cat and The Amanda Show.