The door is kept locked, and the key hangs in a room downstairs.

It was the door at the bottom of this staircase which was found unlocked by the butler yesterday evening." "I'll have a look at it, and then we'll go downstairs.

I want to see this bedroom window from outside." They left the bedroom and proceeded to the end of the corridor, where Caldew pointed out the door at the top of the staircase.

Merrington opened it, and went down the stairs.

He reappeared after the lapse of a few minutes with dusty hands and cobwebs on his clothes.
"The murderer didn't get in that way," he said.