“Who are you?” he asked.

I threw back my long coat and shewed my uniform.

“The plan is changed. You are to come with me. We can’t trust you out of sight again.”

He glanced round as if meditating flight.

“The dog will pull you down if you move,” I said, sternly.

“I must get in,” he murmured. “I shall keep my word.”

“Did you hear what I ordered you?” I rapped back with an oath. “Come,” and I linked my arm in his to drag him away. He resisted at first; but at a word from me Chris shewed his fangs and snarled so angrily that no resistance was left in him. I let go his arm then. “A false step or a single word, and the dog’s fangs will close on your throat,” I muttered fiercely.

He came then, keeping pace anxiously with my quick stride and glancing ever and again over his shoulder at Chris who stalked behind him like a black shadow.

I got him to my house without trouble; for the streets were now all but deserted, and I chose a way which avoided the main roads.

I led him into my study, taking Chris with me, and then turned a lamp full on his face. Then I drew my revolver and held it in his full view as I considered how best to question him, so as to get the truth out of him.