Noclip out of reality and you fall into the Backrooms — endless damp yellow rooms, buzzing fluorescent light, and a hum that means you're not alone. Russell Kemp says he was down there for eleven days. He walks us through the levels, the things that share them, and the one rule that kept him alive.

Tonight's Numbers Station Puzzler: crack the broadcast, then email your answer and the episode number (episode 52) to [email protected] for a shot at a secret line to the show.

Presented by Double Secret Labs — we do science so you don't have to.

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