First of all, Nieghson house was a fucking death trap in some parts. Handy wanted to scare the balls off of the kids, not fucking murder them. One room, he discovered, the floor was rotting away under his feet and threatened to give way to fall into a small sinkhole that descended a good five metres, just to give an example of the danger involved here. He couldn’t stop the kids from coming here without revealing himself, so he did the next best thing and tried to create a controlled environment. He closed over the windows and locked the shutters from the inside of the more dangerous rooms, to dissuade children trying to enter the house through them, before closing over the doors themselves and moving some of the heavier cabinets and wardrobes in front of doors to disguise their existence.