"Where were you?"
"Down in the village, at my mother's place."
"Who gave you permission to go?"
"Mrs. Rath, the housekeeper."
"Did you ask her for leave of absence?"
"No. She knew my mother was ill, and she said to me after breakfast, 'Milly, would you like to go and see your mother this morning?' I said, yes, I should, if she could spare me. She told me she could, so I thanked her and went."
Superintendent Merrington and Captain Stanhill exchanged glances. The same thought occurred to both of them. Mrs. Rath, the housekeeper, had assured them that she had sent all the servants to the library to be examined. Merrington turned to the girl again.
"Mrs. Rath's daughter was staying with her last night, wasn't she?"
"Yes."
"Is she still here?"