He had already made a left turn and then a right by the time I caught sight of him two blocks ahead of me. We were driving along the back streets with no traffic lights at all and only an occasional stop sign to slow our progress. I had to close the gap or risk losing him. A "one-man" tail is nearly pointless unless you know who you're following and where he's going to begin with. At this hour, there were very few cars on the road, and if he drove far, he'd realize the presence of my VW was no accident.

I thought he was headed toward the freeway, but before he reached the northbound on-ramp, he slowed and made a right-hand turn. By then, I was only half a block back so I whipped over to the curb and parked, killing the engine. I locked the car and took off on foot, heading diagonally across the corner lot at a dead run. I caught sight of his taillights half a block ahead. The car was making a left-hand turn into a shabby trailer park.

Puente is a narrow street that parallels Highway 101 on the east side of town, with the trailer park itself squeezed into the space between the two roadways, screened off from the highway by a ten-foot board fence and masses of oleander. I was covering ground at a quick clip. The houses I passed were dark, driveways crowded with old cars, most of them sporting dents. The street lighting here was poor, but ahead of me I caught traces of light from the trailer park, which was strung with small multicolored bulbs.

By the time I got to the entrance, there was no sign of the Chevrolet, but the place was small and I didn't think the car would be hard to spot. The road twisting through the trailer park was two lanes wide. The blacktop still glistened from the rain and water was dripping from the eucalyptus trees that towered at intervals. There were signs posted everywhere: SLOW. SPEED BUMPS. TENANT PARKING ONLY. DO NOT BLOCK DRIVEWAY.

Most of the trailers were "single-wides," fifteen to twenty feet long, the kind that once upon a time you could actually hitch to your car and travel in. Nomad, Airstream, and Concord seemed to predominate. Each had a numbered cardboard sign in the window, indicating the number of the lot on which it sat. Some were moored in narrow patches of grass, temporary camper spaces for RVs passing through, but many were permanent and, by the look of them, had been there for years. The lots were stingy squares of poured concrete, surrounded by sections of white picket fence two feet high, or separated from one another by sagging lengths of bamboo matting. The yards, when they existed, harbored an assortment of plastic deer and flamingos.

It was almost eleven and many of the trailers were dark. Occasionally, I could see the blue-gray flicker of a TV set. I found the Chevrolet, hood warm, the engine still ticking, parked beside a dark green battered trailer with a torn awning and half the aluminum skirting ripped away. From inside, I could hear the dull thump of rock and roll music being played too loudly in too small a space.

The trailer windows were ovals of hot yellow light, positioned about a foot higher than eye level. I edged around to the right-hand side, easing in as close as I could, checking the area to see if any of the neighbors had spotted me. The trailer next door had a FOR RENT sign taped to the siding, and the one across the lane had the curtains pulled. I turned back to the window and got up on tiptoe, peering in. The window was opened slightly and the air seeping out was hot and smelled of fried onions. The curtains consisted of old cotton dish towels, with a brass rod threaded through one end, hanging crookedly enough to provide a clear view of Billy Polo and the woman he was talking to. They were both seated at a flop-down table in the galley, drinking beer, mouths working, words inaudible in the thumping din of music. The interior of the trailer was a depressing collage of cheap paneled walls, dirty dishes, junk, torn upholstery, newspapers, and canned goods stacked on counter tops. A bumper sticker pasted above the front door said, I'VE BEEN TO ALL 48 STATES!

There was a small black-and-white television set perched on a cardboard box, tuned to what looked like the tag end of a prime-time private-eye show. The action was speeding up. A car careened out of control, flipping end over end before it went off a cliff, exploding in midair. The picture cut to two men in an office, one talking on the phone. Neither Billy nor his companion seemed to be watching and the music must have made it impossible for them to hear the dialogue anyway.

I could feel a cramp forming in my right calf. I cast about for something to stand on to ease the strain. The yard next door was a jungle of overgrown shrubs, the parking space choked with discards. There was a set of detached wooden steps tucked up under the trailer door. I blundered through the bushes, my jeans and boots getting drenched in the process. I was counting on the thunder of music to cover the sound of my labors as I hefted the box steps, tramped back through the shrubs, and set the steps under the window.