The Radio Girls of Roselawn by Margaret Penrose

Jessie Norwood tried to remember that she should set little Henrietta a good example. She should not show panic because of the mysterious noise in the loft of the abandoned Carter house.

But as the thrashing sounds continued and finally the cause of it came tumbling down the enclosed stairway and bumped against the door that opened from the kitchen upon that stairway, Jessie screamed almost as loud as Amy.