They drove down the mountain, the road rough at first, then it smoothed out as they got near town. They headed west on 82, deciding to drive the scenic route back to Tucson. Emma marked her map to highlight where they’d already walked, when suddenly she looked up. “Hey, can you get off here?”
“Have to pee again?”
“Ha ha. No. There’s several old roads that go south. Sonoita Creek, when it floods, cuts fast-flowing streams into the valley. We had a couple late storms this winter. I just want to check the area quickly—we’ll come back next weekend. But if I see anything that tells me the streams were running a few weeks ago, I want to come back here first. Okay? Please?”
Billy was tired, but Emma loved him, so he happily turned off the highway and followed her directions. They drove about a mile along a very rough unpaved road until they reached a narrow path. His truck couldn’t go down there—there were small cacti sprouting up all over the place, and the chances of him getting a flat increased exponentially.
Emma got out, and Billy reluctantly followed. She was excited. “See that grove of trees down there?”
He did. It looked more like overgrown brush, but it was greener than anything else around them.
“I’ll bet there’s still water. This is on the outer circle of where the birds could have flown from. I just want to check.”
“The path looks kinda steep and rocky. You sure about this?”
She kissed him. “I’m sure. Stay here, okay? I won’t be long.”
“Ten minutes.”
“Fifteen.” She kissed him again, put her backpack on and headed down the path.
* * *
He sat in the back of his truck and watched Emma navigate the downward slope. He doubted this “path” had been used anytime in the last few years. From his vantage point, he saw several darker areas, plants dense and green, and suspected that Emma was right—this valley would get water after big storms.
Emma was beautiful and smart. What wasn’t to love?
He watched until she disappeared from view into the brush.
He frowned. He should have gone with her. Was he just sulking because he was tired and hungry?
Predators were out here—coyotes, bobcats, javelinas. Javelinas could be downright mean even if you did nothing to provoke them. Not to mention that these mountains bordered the corridor for trafficking illegal immigrants. Billy had taken a criminal justice class his freshman year and they touched upon that topic. He didn’t want to encounter a two-legged predator any more than one on four legs.
What kind of man was he if he couldn’t suck it up and help the woman he loved?
So he grabbed his backpack and headed down the path Emma had taken. He was in pretty good shape, but this hike had wasted him. Emma must have been fitter than he was, because she’d barely slowed down all day. After this, they’d go to his place, shower—maybe he could convince Emma to take a shower with him—and then he’d take her out to dinner. After all, they had something to celebrate: the first time they said “I love you.” They’d go to El Charro, maybe. It was Billy’s favorite Mexican food in Tucson, not too expensive, great food. Take an Uber so they could have a couple of drinks.
He wished he were there right now. His stomach growled as he stumbled and then caught himself before he fell on his ass.
He was halfway down the hill when a scream pierced the mountainside. Billy ran the rest of the way down the narrow, rocky trail. “Emma!”
No answer.
He yelled louder for her. “Emma! Emma!”
He slipped when the trail made a sudden drop as it went steeply down to a small pond—the seasonal one that Emma must have been looking for. The beauty of the spot with its trees and boulders all around was striking in the desert, and for a split second he thought it was a mirage. Then all he could think about was that Emma had been bitten by a rattlesnake, or had fallen into the water, or had slipped and broken her leg.
But she didn’t respond to his repeated calls.
“Emma!”
He stood on the edge of the pond, frantically searching for her. Looking for wild animals, a bobcat that she may have surprised. A herd of javelinas that might have attacked her. Anything.
Movement to his right startled him, and he turned around quickly.
In the shade, he saw someone. He shouted, wondering if Emma was disorientated or had gone the wrong way. But whatever he thought he saw was now gone.
Then he saw her.
Emma’s body was half in, half out of the pond, a good hundred feet beyond him, obscured in part by an outcrop of large rocks on the water’s edge. He ran to her and dropped to his knees. His first thought was that she had slipped and hit her head. Some blood glistened on her scalp.
“Emma, where are you hurt? Emma?”
She didn’t respond. Then he saw the blood on a hand-sized rock on the edge of the pond. And he felt more blood on the back of her skull.
“No, no, no!”
He saw her chest rise and fall. She was alive, but unconscious. He pulled out his phone, but there was no signal. He had to get help, but he couldn’t leave her here.
Billy picked Emma up and, as quickly as he could, carried her up the steep hillside to his truck.
As he drove back to the main road, he called 911. An ambulance met him in the closest town, Patagonia.
But by then Emma was already dead.
Chapter 1
Thursday, May 20
Tucson, Arizona
MATT COSTA, HEAD OF the FBI’s new DC-based mobile response team had been in his old office in Tucson for the last month to investigate two possibly connected cases: the murder of college activist Emma Perez, and possible illegal toxic dumping by a copper refinery plant that was the major employer in the small town of Patagonia.
Matt hadn’t expected the cases to be over quickly—he’d told his boss that it would take six to eight weeks—but he thought he’d have more information by now. Truth be told, he was antsy. The more time that passed, the less likely they’d find Emma Perez’s killer or evidence of Southwest Copper’s duplicity.
If the copper company were guilty.
Christine Jimenez, the supervisory special agent in charge of the Tucson Resident Agency, knocked on his open door. “Marshal Wyatt Coleman just arrived. I have him in the break room getting coffee.”
Matt glanced at his watch—11:00 a.m. Wyatt was right on time. “Frank here?”
“Not yet.”
At the beginning of the investigation, AREA assistant director Frank Block had been grateful that Matt and his team had taken over the case. But for the past week Frank had grown impatient and adversarial. His attitude irritated Matt because Frank, more than anyone, should understand how difficult it was to build a case against a company for illegal dumping—it didn’t happen overnight. They needed evidence, of which they still had very little. Until they found the location of the actual dump site, and a witness or something else concretely tying an alleged offender to the physical evidence, their hands were tied when it came to warrants.