A Strange Disappearance Annotated

A young lady has vanished from a fifth road home. The lone ranger proprietor, Mr Holman Blake, says he remains unaware of her. Yet, the maid Mrs Daniel is stressed and goes to the police. Q discovers blood on the windowsill and the young lady has not set aside the effort to pack. It appears to be certain that she left reluctantly. In any case, why go over the rooftop when she might have left the worker entryway?