We heard the sound of a shot and presently of slapping footsteps.

"Let me in," called a panting voice.

Alderson turned to me.

"It's Williams, sir. Shall I let him in?"

"Yes."

There came the crack of a rifle. Simultaneously Williams burst in on us.

"They're shooting at me, sir. I watched my chance to follow you."

"You're an honest man?" I asked sharply.

"Of course I am, sir. Couldn't say so with all of them around me."

"Good." I gave Jimmie the key of our armory. "Take Williams down and let him choose a revolver and a cutlas."