In the run-up to their premiere of Casting JonBenét at this year's Sundance Fim Festival, Netflix have released a sneak peek at the documentary which true-crime fans have been waiting for with bated breath.

And if their intention was to leave YouTubers feeling pretty disturbed, they achieved it.

A clip for the documentary – which examines the 20-year case into the unsolved murder of six-year-old pageant queen JonBenét Ramsey – was released on YouTube yesterday, and it certainly makes for some unsettling viewing.

Featuring a group of little girls in typical pageant attire, the clip sees one young hopeful, who bears a striking resemblance to the deceased child, asking if they knew who killed JonBenét, and, unsurprisingly, YouTube found it a little hard to watch.

"This is creepy. Can we not?" asked one while another added: "OMG that gave me the heeby jeebies."

"Hell no! Just NO. Nope, not gonna watch. Ever. Never. Netflix, you people are SICK!" ranted another.

If you're not put off by the recently released clip, Casting JonBenét will hit Netflix this April.