The Dark Eyes of London by Edgar Wallace

An examination of local records produced no satisfactory result. Margaret Stuart had died at a farm three miles out of Beverley Manor, and the farm had changed hands twice since the date of her death.

-"Twenty years ago?" said the farmer whom Larry interviewed. "Why, twenty years ago this place was a sort of nursing home, It was run by a woman who took in invalids." Where the woman is, he could not say. She was not a local woman. He thought he had heard she was dead.