1

      ANOTHER BIG FIRE was coming. Braden Zimmer didn’t see or smell the smoke yet. He didn’t hear the crackle and roar of the flames. But he felt it—not the heat; he felt the certainty and the dread and the foreboding.

      A fire was coming.

      Unless he could stop it...

      Unless he could stop the arsonist...

      For months Braden, the superintendent of the Huron Hotshots, an elite team of US Forest Service firefighters, had been trying to find the person responsible for setting fires in his home base of Northern Lakes, Michigan. But he was no closer to nailing a suspect than he’d been when the first fire was set six months ago.

      He wasn’t giving up. He wouldn’t stop looking until he found the person responsible for the fires. But he could no longer argue he didn’t need help. Yet catching up an arson investigator from the US Forest Service who knew nothing about the case was going to take more time Braden didn’t have.

      Not when he was so certain another fire would be set soon. It wasn’t just his instincts warning him about another blaze. It was the arsonist himself.

      He glanced down at the note he’d found sitting on his desk in the Northern Lakes firehouse. There was no envelope. It hadn’t been mailed; it had been placed on the scratched surface of his old metal desk. The son of a bitch had walked right into the firehouse—into Braden’s office. Too bad they didn’t have security cameras in the firehouse. But they had never needed them; until the fires, there had never been much crime in Northern Lakes. The arsonist had been getting bolder and bolder with each fire, but this was ridiculous.

      The action taunted Braden as much as the note itself:

      YOU MADE A TERRIBLE MISTAKE. AND IT’S GOING TO COST YOU AND YOUR TEAM GRAVELY...

      Since the fires were only set when his team was in Northern Lakes, he’d already figured out it was personal. He just hadn’t realized how personal—that he was the one the arsonist wanted to hurt the most.

      Leaving the note where he’d found it, Braden pulled the office door shut behind him as he exited the room. This time he tested the knob, making sure it was locked. Few people locked their doors in Northern Lakes. Until the fires had started, it hadn’t been necessary. Nothing bad had ever happened here, as far back as Braden could remember, and he’d been born and raised in the northeastern Michigan town. He’d only left for college.

      He headed down the hall toward the workout room. Like his office, the hallway walls were concrete blocks—the floors bare concrete, too. But in the workout room there was a wall of mirrors behind the equipment. Ignoring his reflection, he settled onto the weight bench and began to lift. Despite not having to wield a chain saw or ax anymore like his team, he liked to make sure he still could. He wouldn’t have their respect if he couldn’t physically do the job he asked them to do. At thirty-three, he was one of the youngest Hotshot superintendents, so it was important that he maintained authority over his team.

      That wasn’t why he worked out now, though. He was trying to ease the frustration that had his stomach clenched into knots. Lifting the heavy bar up before lowering it nearly to his chest over and over again, he pushed himself—harder and harder. But instead of alleviating his tension, it elevated.

      Some of his guys thought he just needed to get laid—that sex would ease his frustration. But Braden knew he needed to stop the arsonist. And he needed to do it soon.

      Or that big fire would start...

      Maybe it was already too late to stop it, since he could feel it coming. So far they’d been lucky. The Hotshots had been able to rescue everyone in harm’s way; they’d been able to put out every blaze without any serious injuries.

      But the arsonist had been getting more and more dangerous. Eventually someone was going to get hurt or killed. If he believed the warning in the note, that someone was going to be him—or worse, a member of his team.

      They weren’t just his workers or fellow firefighting Hotshots. They were his family. He couldn’t lose any of them.

      * * *

      SAM MCROONEY WALKED through the open garage door of the Northern Lakes firehouse. In the three-story cement-block building with its bright red metal roof, she could almost smell the testosterone. She’d grown up in a houseful of males, so she was accustomed to it. As an arson investigator for the US Forest Service, she was used to dealing with macho men. But Hotshots were another breed entirely—the macho-est of the macho. They were the firefighters who risked life and limb, battling the blaze on the front line.

      “Hello?” she called out. Her voice echoed hollowly off the concrete floors and walls. She knew they weren’t out west fighting wildfires right now—not without their superintendent. And Zimmer was here; he’d called in the arsonist’s threat just over an hour ago. He knew she was coming. Was he avoiding her?

      The firefighters weren’t out on a local call, either. The garage was full, an engine—the same bright yellow as the Hotshots uniforms—in every bay. And in the lot next to the firehouse, she’d parked beside a black US Forest Service pickup truck. Somebody had to be here. Or else why had the door been left open?

      If they were that careless, they were lucky the arsonist had just left a note. He could have burned down the firehouse.

      “Hello?” she called out again as she stepped farther inside the garage.

      Instead of her voice, she heard the echo of a door slamming from somewhere above her. She quickly climbed the steps. At the top of the landing, she started down the wide hallway. The sound had come from up here; someone was in the building. Someone besides her.

      Maybe the arsonist had returned to burn down the firehouse, after all. She reached for the weapon she was carrying in her purse since her gun belt was in her duffel bag along with her uniform. She usually wore the tan-and-green US Forest Service uniform, but as an arson investigator, she could dress in plainclothes, too. She withdrew the Glock and moved slowly down the hallway. Maybe she was overreacting, but she would rather be cautious than careless.

      “Anyone here?” she called out.

      Hinges creaked as a door opened; steam billowed into the hall. Then a man stepped out. Water dripped from his short dark hair and glistened on his broad shoulders and naked chest. He wore only a towel, cinched low on his lean hips. He lifted his hands, and the towel slipped a little lower.

      “Are you holding me up?” he asked, and a slight grin curved his mouth.

      She shook her head. “I’m with the US Forest Service.”

      “Me, too,” he said. “You don’t need the gun.”

      He obviously wasn’t armed. But she wasn’t