I had an interview with the baronet in his study after breakfast, and I told him all that I had seen.

He was less surprised than I had expected.
"I knew that Barrymore walked about nights, and I had a mind to speak to him about it," said he.

"Two or three times I have heard his steps in the passage, coming and going, just about the hour you name." "Perhaps then he pays a visit every night to that particular window," I suggested.
"Perhaps he does.

If so, we should be able to shadow him and see what it is that he is after.

I wonder what your friend Holmes would do if he were here." "I believe that he would do exactly what you now suggest," said I."He would follow Barrymore and see what he did." "Then we shall do it together." "But surely he would hear us." "The man is rather deaf, and in any case we must take our chance of that.