During one lull, the PS5 unexpectedly switched off and the TV screen hissed white noise.
The boys took a food break, returning to find the fan knocked over and a plastic bin upturned.
“Poltergeist!” they cried, and fled to sleep in the living-room.
When Uncle Jack, staying in the guest house, entered through the back door, the boys started before sighing with relief.
Later, when the real Uncle Jack entered through the back door, he found an empty house.