Saylor complained about the "monsters on the wall" in her bedroom when she was at the family farmhouse in Charlotte, North Carolina.

At first, his mother, Ashley Massis Class, and her husband took no notice. After all, they had just watched Pixar's animated film Monsters S.A. together.

"We even gave her a bottle of water and told her it was monster spray, which she could spray to ward off any monsters at night," recalls Massis Class, who is an interior designer.

However, in the months that followed, Saylor began to insist even more that there was something inside her cupboard.

It all started to make more sense when her mother realized that there were swarms of bees clustered near the attic and chimney, outside the farmhouse, built around 100 years ago. She concluded that Saylor might have been hearing the buzzing of the insects near her bedroom.

Initially, she called a pest control company, but discovered that the flying insects were a species of bee protected in the USA.

The family then contacted a beekeeper, who observed that the insects were flying towards the attic floor - just above little Saylor's bedroom.

The bees had spent eight months building a gigantic hive.

Using a thermal camera, the beekeeper inspected the walls of the girl's room. "It lit up like a Christmas tree," says Massis Class.

The beekeeper - whom the girl began to call a "monster hunter" - said he had never seen a hive penetrate so far into the wall. He located a coin-sized hole in the corner of the attic vent. And he tore down the wall, revealing a huge honeycomb.

"They started coming out of there like in a horror movie," recalls Massis Class.

The beekeeper removed between 55,000 and 65,000 bees, as well as 45 kg of honeycomb.

Three reverse aspiration extractions of the insects from the wall were carried out to place them in boxes. They are being transferred to a bee sanctuary.

Massis Class had to insulate the room with a screen between extractions to prevent the bees from spreading around the house.

She said that the bees and honey had damaged the electrical wiring in the house. And, according to her, home insurance doesn't cover anything related to pests, because they consider it to be something that can be avoided, and she estimates that the bees caused more than 20,000 dollars in damage.