Sheriff Brady saw no point in attempting to explain the twenty-four-hour missing persons rule to Olga Vorevkin. “We will,” she promised instead. “We’ll do our very best.”

Outside in the driveway, the only official vehicles left were Ernie’s white van and Joanna’s Crown Victoria, Alf Hastings, David O’Brien’s chief of operations, sat on a folding camp stool next to Joanna’s sedan. He was smoking the stub of a powerful cigar.

‘‘Where’d everybody go?” Joanna asked.

Hastings shrugged. “Beats me,” he said. “Call came in over the radio, and they all took off like they’d been shot out of a cannon.”

Opening the car door, Joanna reached for her radio. “Sheriff Brady here,” she said. “What’s going on?”

Larry Kendrick, the Cochise County Sheriff Department’s lead dispatcher, took the call. “We had what at first sounded like a serious explosion over in St. David. Everything’s pretty much under control now, but Chief Deputy Voland didn’t want to disturb either you or Detective Carpenter while you were talking to the O’Briens. Voland headed over to St. David right away, along with two other cars.”

Joanna’s heart constricted to hear the words explosion and St. David mentioned in the same sentence. St. David was the site of a nitrate-manufacturing plant that specialized in both fertilizers and explosives. “Not the Apache Powder Plant,” she breathed.

“No,” Kendrick reassured her. “It wasn’t nearly that serious. It was at a farm near the river on the other side of town, off to the south rather than to the northwest.”

“Any injuries?”

“None reported so far. There was a small fire. Outbuildings only. As I understand it, that’s out now.”

“Keep me posted anyway,” Joanna said. Sliding her thumb away from the push-to-talk switch, she turned to Hastings. The man stood up, making a production of grinding out what was left of his cigar. “If you’re ready to go, I’ll get my ATV and lead you as far as the gate.”

“That’s not really necessary,” Joanna objected. “I’m sure we can find our way out.”

“I’m sure you can, ma’am,” Hastings said, doffing his hat. “But orders are orders, and since the guy giving the orders also writes my checks, I’ve got no choice but to follow ‘em.”

Hastings ambled away, leaving Joanna and Ernie alone in the deepening twilight. “What do we do now, Coach?” the detective asked.

“Tomorrow’s another day,” Joanna told him. “We go home. You take off your tie, I take off my high heels, and we both put our feet up.”

“You really don’t want me to do anything more tonight?” Ernie asked.

Joanna shook her head. “No,” she replied. “We’re not going to move on this case unless and until Brianna O’Brien doesn’t show up tomorrow afternoon.”

“Are you sure that’s wise?” Ernie asked. “It looks to me as though David O’Brien has more money than God. And clout to match. What if he decides to put youout of office?”

Joanna shrugged. “This is a free country and that’s his God-given right. In the meantime, you and I are charged with providing equality under the law. That means for everybody, David O’Brien included. If we have a twenty-four-hour waiting period for every other missing person in Cochise County, then we have a twenty-four-hour waiting period for him as well.”

“Sounds good to me,” Ernie said, loosening his tie and setting off for his van.

Hastings rumbled up just then on his ATV. First Ernie and then Joanna fell into line behind him. At the far gate, there was a turnout along a side road that provided a stopping place just inside the fence. Hastings swerved off the roadway onto the parking strip, leaving enough room for Joanna and Ernie to drive past as the gate swung open. Checking in her mirror Joanna saw him wait until both vehicles had cleared the gate before he let it swing shut and drove away.

Fort O’Brien, Joanna thought. That would have been a much better name for the place. Taking all the security into consideration Green Brush Ranch just doesn’t do it.

Joanna had traveled only a mile or two back toward town when hunger suddenly asserted itself. It had been almost eight hours since her lunchtime Whopper in Benson. At that hour, the idea of going home to cook was out of the question. Instead of driving directly to High Lonesome Ranch, she headed for Bisbee’s Bakerville neighborhood and Daisy’s Cafe.

On that still-steamy June Saturday night, other Bisbeeites must have had much the same idea. The draw might have been the almost chilly air-conditioning in the restaurant as much as it was the food. Whatever the reason, Daisy’s was jammed. People stood in clutches of two and three in the cashier’s lobby area, waiting for one of the booths or tables to clear. When Daisy Maxwell, the owner, came to collect the next pair of customers, she spied Joanna standing alone.

“You here by yourself?” Daisy asked, picking up a fistful of menus.

Joanna nodded.

“There’s a single up at the counter. You’re welcome to that if you like,” Daisy told her. “Everybody else is at least a two-top.”

Collecting a menu of her own, Joanna headed for the single empty stool. She waited while Daisy’s husband, Moe, finished clearing the spot of dirty dishes before she sat down. “What are you doing here?” she asked.

Moe Maxwell’s usual place of employment was the Bisbee branch of the post office. His primary role in his wife’s restaurant was as chief occupant of the booth nearest the door. There, ensconced with a view that included both the cash register and a tiny black-and-white TV, he would while away his weekend hours drinking coffee and visiting with whichever one of his many cronies happened to stop by.

Sorrowfully, Moe shook his head. “Don’t even ask,” he said, placing a glass of ice water in front of Joanna. “I was drafted. When it got crowded, Daisy said I could either go to work or plan on spending the night with old Hoop out in his doghouse tonight when we get home. That didn’t leave me much of an option.”

Joanna laughed. “I suppose not,” she said.

“Hot enough for you?” Moe continued, halfheartedly wiping the counter.

Joanna nodded. “And wouldn’t you know, the air-conditioning went out in my car today. I had to take my daughter to camp up on Mount Lemmon. Between now and when I go to pick her up, I’ll have to get it fixed.”

“Good luck with that,” Moe said. “You’d better call for an appointment right away. Jim Hobbs is the only mechanic I know of around town who’s doing that right now. People are lined up out the door. I just went through it myself a couple of weeks back, me and my old GMC I can tell you this, it lightened my wallet by a thousand bucks.”

Joanna almost choked on a single sip of water. “A thousand dollars?” she repeated in dismay. “You’re kidding. To fix an air conditioner?”

Moe nodded, looking even sadder than before. “That’s right,” he replied. “I’m not sure I understand all the details. Has something to do with global warming and holes in the ozone. According to Jim Hobbs, one itty-bitty little thirty-pound canister of Freon costs a thousand bucks a pop these days. Jim retrofitted my truck with some new kind of compressor that uses something else. I can’t remember exactly what it’s called. Had a whole bunch of letters and numbers. R2D2, maybe? Anyways, the damned thing cost me a fortune, and it doesn’t work nearly as well as the Freon did, either. I would have just let it go, but you know Daisy. With her hair the way it is, she can’t even ride to the grocery store with the windows rolled down.”

Joanna looked across the room to where Daisy was separating yet another two people from the herd waiting near the door. For thirty years, a towering beehive-one with each peroxided blond hair lacquered firmly into place-had been Daisy Maxwell’s signature hairdo. The mere fact that the price of Freon had shot sky-high wasn’t enough to make her change it.