"I understand. You cannot break your oath of allegiance for me; and my oath of allegiance will not permit you. But it tears and rends. Still, she once passed out of my life absolutely. Perhaps my concern is for my mother. I am numb with the tragedy of it. Flesh and blood, but she denied it. I tried to save her. Suppose we let Berta's fate rest on the knees of the gods?"

"If it is proven she had nothing to do with Hallowell's death, there is a chance of merely interning her for the duration of the war."

"Hallowell! That afternoon he spoke to me in the Botanical Gardens. He thought I was Berta. I tried to save him, but I reached the villa too late. I saw it, in silhouette on the curtains! I called, rang the bell, shook the gate. Then the lights went out.... I tried to save him!"

"I know. He was the finest friend a man ever had. And somewhere up there among the stars his spirit is at peace. John Mathison has come through!"

"Alone, all alone, without aid from any one. With an immeasurable power behind you, you fought it out alone. It was splendid—American! That envelope! The tameness of your surrender hurt. I did not understand until after we were in that house and I saw you smile. That receipt was only a trap, a bait; and the man you believe killed Hallowell walked blindly into it. No one but you could touch that envelope, once it was in a hotel safe. Am I right?"

"The man is a prisoner in my room at this moment. When we enter this drug-store, it is a signal for the raiding of that house, fore and aft. A fly couldn't escape. We idiotic Yankees! I have him. It took patience. But there was a guardian angel watching over John Mathison. Had you not warned me they would have learned the dance I was leading them, and vanished. They had me for sleep. I thought I was awake, but actually I was sleep-walking."

"Then I wasn't useless, after all?"

"No." He smiled at the sky, at the stars he couldn't see but knew were there. Day after to-morrow!

Mathison was a one-idea man. What I mean is, when he undertook a task he went at it directly, whole-heartedly; there were never any side issues.