He hit the bell again. This time he said, "Boulder Police," right after he heard the bells begin to peal inside the house. His tenor carried in the still air. The whole neighborhood of shuttered windows and closed doors had to know now that the cops were here. VanHorn waited for lights to come on, doors to open. It didn't happen. Collamore saw her looking his way and waved at her. She didn't wave back.

Whiskers reached down and tried the latch on the door. It didn't give.

VanHorn responded by touching her holster with her fingertips. The act was a caress, almost sensual in its carelessness-and it was involuntary, like a man checking for the presence of his wallet half a minute after he leaves the automatic teller machine.

The two cops waited for someone to come to the door and tell them everything was just fine.

After most of a minute had leaked into the void between them, VanHorn said, "I'll check the back of the house." She wasn't nervous yet, but she had definitely crossed over the line that separated routine from everything else that existed on a police officer's planet. The feeling was familiar, and not entirely unwelcome. The wariness sharpened her senses. She'd been around long enough to know that wasn't a bad thing.

"I'll take a look at the windows up front here and over on the other side," Carpino said.

The north side of the house was unlit, making it difficult for VanHorn to navigate the uneven path of flagstones. Spreading junipers clotted the open spaces between the window wells. An avid gardener, she hated junipers, especially spreading junipers. She alternated the flashlight beam between the path in front of her and the windows on the side of the house and noticed nothing that alarmed her. She fingered the switch of the radio microphone that was clipped to the left shoulder of her uniform blouse and said, "Nothing unusual on the side of the house. Just some unimaginative landscaping. But even in Boulder I don't think that's a crime."

Carpino replied, "Yet. Hold on, I may have something up here, Kerry." His voice betrayed no alarm. She waited for him to continue. He didn't.

She stepped lightly into the backyard. A streetlight brightened the rear of the house. She reached up and touched the button on her microphone. "What do you have, Whiskers? Open window?"

"No, I'm on the opposite side of the house from you, shining my beam inside into what looks like the living room. I make a lamp lying on the floor and some broken glass. That's all."

After again caressing the flap on her holster with the fingertips of her right hand, Officer VanHorn spent a moment examining the backyard with the beam of her flashlight. Only when she was certain she was alone in the yard did she take determined strides across a pleasant brick patio, past an almost-new gas grill, and up two steps to the door that led to the house. She grabbed the knob of the metal security door and twisted it. The door opened right up. She locked her gaze on the painted French door behind the security panel and fingered her microphone. "Back door's open. Not just unlocked, but open-open. Why don't you call for backup?"

She waited for his response long enough to inhale and exhale twice. Finally, she said, "Colin?"

He said, "Sorry. I may be looking at a person's foot, Kerry, just someone's heel. Like there's somebody lying on the floor. But I can't see past the heel. If it's a foot, then the rest of the body's behind a sofa."

VanHorn sighed. "We'd better go in. Tell dispatch."

"Will do. I'll call for backup and join you back there."

Kerry VanHorn flicked up the flap on her holster and drew her service weapon with her right hand. Her Mag-Lite was in her left. Before she took another step she squeezed her biceps against her upper torso to convince herself that she'd remembered to wear her vest. She had.

Within seconds, Whiskers joined her at the back door. He, too, had his service weapon ready. He said, "The living room's in the southwest corner. That's where I saw the foot." She nodded and said a silent prayer before she nudged the French door with the toe of her shoe. She winced as the door squeaked open.

She yelled "Boulder Police" as she entered a big kitchen and family room. Shadowed light from the alley street lamp revealed an expensive recent remodel. Cherry cabinets. Granite countertops. Big double stainless-steel sink. Appliances that disappeared into the cabinetry. One appliance she didn't even recognize. She didn't like that kitchens had developed in such a way that people used appliances she couldn't even recognize.

But nothing was out of place. She could hear Whiskers's footsteps on the hardwood floor behind her. The resonant clap was reassuring. There was almost nothing she liked doing less as a cop than walking into dark houses.

The door from the kitchen led to a short hallway. Again she called out, "Boulder Police," and waited for a reply. Nothing. Carpino repeated the announcement. After she waited for a response that never came, she stepped past a powder room and saw a dining room on her right. She played the beam into the room for two or three seconds. It didn't appear that anyone had eaten in there recently; the table was covered with piles of mail. She gestured with her flashlight to reassure her partner before she turned toward the living room. At the bottom of a staircase she flicked the beam up the stairs. She spotted nothing that alarmed her but noticed an odd device on rails attached to the side of the staircase. She also noted a rhythmic shush-shush, shush-shush, shush-shush coming down from the second floor. The sound was familiar to her but she couldn't place it. Shush-shush, shush-shush, shush-shush. The rhythm wasn't out of place in a house. She was sure of that. But what was it that she was hearing?

Darn. She couldn't place the noise.

She took two steps into the living room and swept her flashlight beam in a wide, slow arc, looking for the foot that Whiskers had seen, praying that he was wrong or, failing that, that there was at least still a person attached to it.

The first thing that caught her attention was the lamp on the floor-she assumed it was the same one that Whiskers had spotted through the window. Then she saw the broken glass, a lot of it. The glass appeared to be some kind of pottery or ceramic; it must have been a big piece before it was busted.

No foot.

Lights flashed outside on the street. VanHorn looked up and was relieved to see a patrol car slide to the curb in front of the house. Her partner whispered, "Backup's here." She adjusted the grip on her weapon and, for her own benefit, silently mouthed, "I'm doing fine. I'm doing fine."

eeeehhhhhhnnnnnn.

A loud, noxious buzzing seemed to fill the house. The sound was bitter and sour, like aural vinegar. It blared for maybe two seconds before it stopped as abruptly as it started. VanHorn's pulse jumped when the noise started and she wheeled around to check behind her. Carpino's eyes were wide as he, too, searched for the source of the sound. VanHorn's service weapon felt heavy in her hand.

She shook her head, announcing she didn't know the source of the sound. Carpino did the same.

The buzzing blared again. eeeehhhhhhnnnnn. Once again the sharp sound stopped suddenly.

The noise had seemed to come from everywhere at once.

What was it? What was it? She couldn't place it.

She yelled "Boulder Police" one more time.

Then she noticed that the shush-shush had ceased, and the pieces of the puzzle fell into place. VanHorn smiled. She knew what it was. The shush-shush had been the refrain of a tumbling clothes dryer. The buzzer was the notification that the cycle was done. Her boyfriend's dryer made the same awful noise. She exhaled and slowly refilled her lungs. "Whiskers? That was a clothes dryer, I think. At the end of its cycle."