A man emerged, lit a cigarette, and walked leisurely down the street.
"No!" she cried, as Braine turned to make for the door doubtless with the intention of finding out who the man was. "Every night after you leave he appears."
"Does he follow me?"
"No. And that's what bothered me at first. I believed he was watching some apartment above. But regularly when I turn out the lights he comes forth. So there's no doubt he watches you enter and takes note of your departure."
"But doesn't follow me. That's odd. What the devil is his idea?"
"I'd give a good deal to learn."
The shadow and the glowing cigarette disappeared around the corner, and the lights in the apartment were turned on again.
"He's gone. You really think he's watching me?"
"He is watching this apartment, I know that much."
And even at that moment the watcher was watching from his vantage behind the corner.