Harrow had gone to stand over the quiet, punctured corpse of Teacher. She dropped to his side like a long-tailed crow. All Gideon could do was press herself back up against the wall, smell the blood, and feel absurdly empty. Her necromancer said, “You fixed nothing.”
“Harrow,” Palamedes said warningly.
“This man was a shell filled with a hundred souls,” said Harrow. The captain’s eyes flicked open, and stayed open. “He was a thing of ridiculous power—but he was a prototype. I doubt he had killed anyone before today. I would be astonished if he had a hand in the deaths of the Fourth and Fifth Houses, as he was created for the sole purpose of safeguarding the place. There is something a great deal more dangerous than an old experiment loose in the First House, and he could have helped us find out what it is. But now you’re going to die too, and you’ll never know the whole story.”

Gideon the Ninth - Act Four, Chapter Thirty-Two