Chapter 9, sir Henry wanted to know what Holmes would have done about Barrymore walking the corridors at night. What did Watson tell him, and what did they do?

Two days after seeing Barrymore in the room, Watson examined it to find it has "the nearest outlook on the moor" (225). Hence, he believes Mr. Barrymore was looking for something on the moor. Initially, he believed the man was meeting a lover, but then disregarded that notion as unfounded.