Twelve hours have passed since Mark vanished inside Apartment 2C — and Elena is running out of hope. The building has fallen eerily silent, and when she tries to reach her neighbours, no one answers. Then, a voice message arrives. It sounds like Mark… but something about it is wrong.

The voice claims to be trapped under the floor and begs Elena to “let him out.” But as the sounds beneath her flat grow louder — dragging, scratching, whispering — she begins to realise the thing calling to her isn’t human.

Under the Floor is the most haunting chapter yet of The Tenant Upstairs — a tense, claustrophobic descent into isolation, doubt, and the terrifying question: what’s really living beneath Apartment 2B?

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