"What is going on in the hall, I wonder ?" Stepping to the door she called, "What's the matter, Grace?
Can't you get into your room ?" "Evidently not," laughed Grace.

"It is locked.

I suppose Mrs.Elwood locked it to prevent the new girls from straying in and taking possession." "H-m-m!" ejaculated Elfreda, walking over to the door and examining the keyhole.

"Your supposition is all wrong, Grace.

The door is locked from the inside.