Internet - When this couple moved into their new home, they never suspected what lay beneath the carpet...

TikTok user Unfortunateexistance might not be sleeping as peacefully as she used to.

On February 19, she made an alarming discovery in her house.

In a video posted on the social network, she filmed the moment she lifted the gray carpet in her home.

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Hidden underneath was a door embedded in the old flooring. Neither she nor her husband had any clue of the door's existence!

The young mother and her friends pulled open the rusted handle.

A wooden staircase appeared, seeming to lead deep down into the basement – which she didn't know she had.

"When you pull the carpet off your floor and FIND A BASEMENT YOU NEVER KNEW ABOUT," the woman described the creepy moment on TikTok.

Naturally, viewers were eager to see what the original poster would find downstairs.

In several follow-up videos, the woman explains that she was initially afraid to go down the stairs because she had heard a "humming noise" coming from the basement. In addition, all the lights in her house had inexplicably turned on in the middle of the night.

Some users could definitely relate to her worry: "Omgggg are we watching a real life scary movie omg."

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Eventually, she mustered all her courage and filmed what she discovered in a subsequent clip. The basement featured a water tank and the fuse box, as well as some old furniture, including a chair and a bed frame.

But many viewers are still convinced there's more to the story: "The light box is open and you said the lights went on in the middle of the night girl pack your family up and move somebody lives down there,'" one user commented.

Another wrote, "it looks like one of those places where people get torchered."

What really went on in the creepy basement will likely remain a mystery...