I was only slowly returning to reality, and it took me a few moments to form a coherent answer through all the adrenaline surging into my brain.

"I . . . I don't know. But I think I'd better warn everybody to keep an eye out for strangers. He's . . . he's wound a little tight, to put it mildly." I was still shaking, which she fortu­nately failed to notice. At that point, there seemed no great reason to spook her with mention of the gun.

"Boy, he wasn't just some homeless junkie," she said. "He looked like a heavy in one of David's old action pictures. All he needed was a Mack-10."

"Right." Jesus, Arlene, I think he might have had one. "So let's get moving."

As I watched the vans being loaded, slowly calming down, I kept thinking about him. He was undoubtedly connected to the phone call, but why would anybody be so worried about what I was doing? I couldn't think of any serious rea­son.

Half an hour later we were all headed downtown. Along the rain-swept streets the "All Beef" hot-dog vendors cow­ered under their red-and-yellow striped umbrellas, while de­parting office workers, briefcases perched above their heads as makeshift protection, scurried along the edges of build­ings searching for cabs. While Arlene continued to chat non­stop, I tried to do a little mental processing. And my mind kept drifting back to the sight of little Rachel, and Kevin. What perfect kids. The way she was running. . . .

Hey, wait a minute. How could they be siblings? Brother and sister? Rachel was almost exactly half a year older than Kevin. Biology didn't work that way. No way could they be related, but still . . . they looked so alike.

I realized Arlene hadn't put it together about the ages. The brother/sister theory made absolutely no sense. Those kids were born six months apart.

If that wasn't strange enough, why did they both have those tiny cat medallions with the lines and dots on the back? Which were actually kind of creepy, more like sacred amulets than little toys.

Talk to Lou. He might have some insights.