“That is conclusive,” said the professor, glaring angrily at my companion. “Now, sir”⁠—he leaned forward with his two hands upon the table⁠—“it seems to me that your position is a very questionable one.”

Holmes shrugged his shoulders.

“I can only repeat that I am sorry that we have made a needless intrusion.”

“Hardly enough, Mr. Holmes!” the old man cried in a high screaming voice, with extraordinary malignancy upon his face. He got between us and the door as he spoke, and he shook his two hands at us with furious passion. “You can hardly get out of it so easily as that.” His face was convulsed, and he grinned and gibbered at us in his senseless rage. I am convinced that we should have had to fight our way out of the room if Mr. Bennett had not intervened.