“Fastened; but there are steps on the sill.”

“Well, well, if it was fastened the steps could have nothing to do with the matter. That’s common sense. Man might have died in a fit; but then the jewels are missing. Ha! I have a theory. These flashes come upon me at times.⁠—Just step outside, sergeant, and you, Mr. Sholto. Your friend can remain.⁠—What do you think of this, Holmes? Sholto was, on his own confession, with his brother last night. The brother died in a fit, on which Sholto walked off with the treasure. How’s that?”

“On which the dead man very considerately got up and locked the door on the inside.”