She'd hung up before I'd even finished the sentence.

By now, I had so much adrenaline pumping through me, I could hardly breathe. Gilbert Hays was standing at the Avis counter, filling out the paperwork. He seemed to be consulting one of those multicolored one-sheet maps of the vicinity, the desk clerk leaning over helpfully, pointing out his route. I took the escalator to the street.

Outside, lights had come on, only partially dispelling the gloom of the pickup area. A limousine pulled to the curb in front of me, the uniformed white driver coming around to the door on the passenger side to assist a silver-haired couple as they emerged. The woman wore the fur of some beast I'd never seen. She looked around uneasily, as though she were accustomed to warding off insults. The driver removed their luggage from the trunk. I searched the area, looking for airport police. Light and shadow played across the concrete in patterns as repetitious as a stencil. A wind tunnel had been created by the building's construction, and a diesel-scented gale blew through, generated by the constant rush of passing traffic. I didn't see any of the vans from the hotel. I didn't see a cab stand or any passing taxis. Gilbert had probably already been given the keys to his rental car. He'd be coming out the door behind me, searching out the waiting area for the shuttle that would take him to the slot where his vehicle was waiting. Or perhaps, far worse, the rental car had been left in the parking garage just across the way, in which case he only had to cross the street.

My gaze settled on the limousine. The driver had received his tip, touched his cap, closed the limo door on the rear passenger side. He circled the back end of the vehicle, heading for the driver's side, where he opened the door and slid behind the wheel. I began to rap frantically on the front passenger side window. The glass was tinted so darkly, I couldn't see in at all. The window was lowered with a whir. The driver looked across at me, his expression neutral. He was in his thirties, with a round face, sparsely growing red hair, combed straight back from the crown. Along the edges of his ears, I could see where his hat had rested.

I leaned in slightly, handing him my wallet, with my California driver's license and my private investigator's license showing. I said, "Please listen very carefully. I need help. I'm a private investigator from Santa Teresa, California. Somewhere behind me, there's a guy with a gun who's here in Dallas to kill a couple of friends of mine. I need to get to the Desert Castle. Do you know where that is?"

He took my wallet gingerly, like a cat who deigns to accept a treat from an unfamiliar hand. "I know the Desert Castle." He looked at the picture on my driver's license. I could see him take in the information on my private investigator's license. He began to leaf through some of my other identification cards. He handed my wallet back and then simply sat and stared at me. He popped the lock up and then reached for the keys in the ignition.

I opened the passenger door and got in.

The limo pulled away from the curb as silently as a train easing out of a station. The seats were gray leather and the dashboard was a burled walnut so shiny it looked like plastic. Just at my left knee was the handset for the car phone. "Mind if I use that to call the cops?" I asked.

"Be my guest."

I dialed 911 and explained the situation to the emergency dispatcher, who asked for my approximate location and said she'd have a county sheriff's deputy meet us at the Desert Castle. I tried the hotel again, but I couldn't get the operator to pick up at all.

We circled the airport and headed off toward open country. It was fully dark by now. The land seemed vast and flat. The headlights illuminated long stretches of green with an occasional monolithic office building jutting up on the horizon. Lighted billboards appeared like a series of flash-cards. Where we crested a rise, I could see the sweep of intersecting highways defined by the lights from fast-moving traffic. Anxiety buzzed and sizzled in my gut like defective neon, outlining vital organs.

"What's your name?" I asked. If I didn't talk, I'd go mad.

"Nathaniel."

"How'd you get into this?"

"It's just a way to pick up money until I finish my novel." His tone was glum.

I said, "Ah."

"I used to live in Southern California. I was hoping to get a screenplay launched, so I moved out to Hollywood and worked for this actress who played the zany sister-in-law on a sitcom about a waitress with five adorable kids. Show only lasted couple seasons, but she was raking it in. I think most of the money went up her nose, to tell you the truth. I drove her to the studio and back every day and washed her car and things like that. Anyway, she told me if I came up with an idea for a film, she'd have me pitch it to her agent and maybe she could help me break in. So I get this idea about this wacko mother-daughter relationship where the girl dies of cancer. I tell her about it and she says she'll see what she can do. Next thing I know, I go to a movie theater on Westwood Boulevard and see this movie about some girl dies of cancer. Can you believe that? What's her name, Shirley MacLaine, and that other one, Debra Winger. There it was. I should have had it registered with the guild, only nobody mentioned that. Thanks a lot, gang."