Shall we go in ?" The two men walked slowly up the gravelled path, leading to the side door.

West's thoughts were busy with this new discovery.

Had he inadvertently stumbled upon a clue?
So he had occupied the room usually reserved for Percival Coolidge.

Perhaps here was the explanation of the coming of his strange visitor.

If so, then it was already clearly evident that whatever the plot might be, this fellow had a hand in it.