It was 60,000 bees.
When three-year-old Saylor Class began complaining of monsters in her bedroom, her parents thought it was just a figment of a child's overactive imagination.
But then a beekeeper discovered tens of thousands of honeybees above the girl's bedroom.
Saylor had complained of "monsters in the wall" of her room at their farmhouse in Charlotte, North Carolina.
Her mother, Ashley Massis Class, and her husband thought nothing of it...
But over the following months, Saylor became more insistent that there was something in her closet...
She and her husband contacted a beekeeper who noticed the insects were travelling towards the floorboards of the attic - right above her daughter's bedroom.
The bees had spent eight months building the monster hive.
The beekeeper brought a thermal camera to scan the walls in the three-year-old's bedroom.
"It lit up like Christmas," Ms Massis Class said.
The beekeeper said he had never seen a hive go that far down into the wall...
The beekeeper has removed between 55,000 and 65,000 bees and 100lb of honeycomb...
The honeybees and their honey damaged the house's electric wiring,.. She said her homeowner's insurance won't cover anything pest-related because they deem it preventable.
She estimates the bees have caused more than $20,000 in damages.