Look here, Mrs. Bradley," he said. "I feel a pretty frightful bounder telling you all this about the poor girl, but I think some woman ought to know about it. On Wednesday night, yes, last night, Eleanor came into my bedroom at about half-past twelve and--and wanted to stay there! I thought it was a ghost at first. I had terrible difficulty in getting rid of her. In fact, I had to get out of bed and shove her outside and lock the door. Choice, isn't it?"
...
"Of course you will lock your door tonight," she said.
"You bet I shall," Bertie said fervently, "and nothing short of the house catching fire is going to persuade me to open it.

Gladys Mitchell