Michael shook his head. "No one else can face the Denarians, Harry. No one else can challenge the Fallen. This moment might be the only chance Cassius has to turn aside from what he has chosen. To change his path."

"Great. I'm all for changing his path. Let's change it to a direct line to the bottom of Lake Michigan ."

Michael's expression was pained. "The Knights are here to protect freedom. To give those who are under the oppression of dark forces the chance to win free of them. I cannot sit in judgment on this man's soul, Harry Dresden. Not for you. Not for anyone. All I can do is remain faithful to my calling. Give him the chance to see hope for his future. To show him the love and compassion any human being should show another. The rest is out of my hands."

I watched Cassius's face while Michael spoke. His expression changed. It became harder. More brittle. And bitter. What Michael said had touched him. I didn't believe for a second that it had touched Cassius enough to change his mind. But it touched him enough to drive him toward fury.

I turned to Michael and said, "Do you really think that thing is going to start sipping of the milk of human kindness?"

"No," Michael said. "But that doesn't change my purpose. He has surrendered his coin, and the influence of it. The rest is not for Sanya or me to decide. It is Cassius's choice."

"You've seen these things," I snarled, stalking over to face Michael. "I've seen the corpses they've left. They would have killed me, Susan, you-hell, all of us-without blinking an eye. God only knows what they have in mind with that curse they're putting together."

"All power has its limits, Harry." He shook his head. "This is the limit of mine."

Without really thinking about it, I shoved his shoulder. "They might already have killed Shiro. And you're going to let this bastard walk?"

Michael caught my arm in one hand and twisted. Michael is strong. I had to rise up onto my toes to relieve the pressure he put on my elbow, and he shoved me back from him, his eyes hard and cold and angry as hell.

"I know that," he said in that same deadly quiet voice. "I know they've hurt him. That they're going to kill him. Just as Shiro knew that Nicodemus would betray his promise to set you free. It's one of the things that makes us different than they are, Harry. The blood on their hands does not make it right to bloody my own. My choices are measured against my own soul. Not against the stains on theirs." He looked at Cassius, and the Denarian flinched away from the silent flame in Michael's expression. "It is not for me to judge his soul. No matter how much I might want to."