The Circuit Board in the Evidence Bag
The fluorescent lights in the Port Blane police station hummed at a frequency that set Mara's teeth on edge. Not the standard sixty-hertz hum—this one had a harmonic distortion, a slight warble that suggested a failing ballast. She catalogued it automatically, the way other people might notice the weather, while Chief Elias Vance slid a plastic evidence bag across the scarred metal table toward her.
Inside the bag, the circuit board she'd pulled from the fisherman's pocket gleamed under the harsh light. Hand-soldered joints, traces etched with acid that had bitten too deep in places. She'd studied it for hours in her shop, mapping every connection, every component. She knew its geography better than she knew the streets of Port Blane.
"Recognize this?" Vance asked.
He leaned back in his chair, arms crossed. His uniform shirt strained at the shoulders, and there was a coffee stain on his tie that looked days old. He'd been in the navy once, she remembered. Someone had told her that once. Or maybe she'd read it somewhere.
"It's the component I found on the first victim," she said. "I gave it to your officer at the scene. Along with my statement."
"That's not what I asked." Vance tapped the bag with one thick finger. "I asked if you recognize it. As in, have you seen it before? In your shop, maybe. In your work."
Mara's hands were flat on the table, palms down. She could feel the vibration of the faulty ballast through the metal, a low thrum that matched the tension building in her chest. "I've never seen a component like this before. The soldering technique is unusual. The substrate material isn't standard—it's a phenolic composite that hasn't been manufactured commercially since the early nineties. The traces are hand-etched, which suggests—"
"Dr. Voss." Vance's voice cut through her technical ramble like a blade. "Where were you on the night of the librarian's fire?"
The question landed like a physical blow. She'd known it was coming—had known the moment she saw the evidence bag that this conversation was inevitable—but the directness of it still caught her off guard.
"I was in my shop. Working."
"Alone?"
"Yes."
"Anyone see you? Call you? Anything that can verify that?"
Mara thought about the long hours of that night. She'd been mapping the sub-audible sonar signature she'd decoded from the broadcast, cross-referencing it against the naval base's decommissioned frequency allocations. She'd made coffee at 11:47 PM. She'd spilled some of it on her workbench and cleaned it up with a rag she'd then thrown in the hamper. She'd heard the foghorn at the lighthouse pier sound three times, which meant the fog was thick enough to warrant the full sequence.
None of that was verifiable by anyone but herself.
"No," she said.
Vance nodded slowly, like he'd expected that answer. He reached into his pocket and pulled out a folded piece of paper, sliding it across the table next to the evidence bag. "This is a record of your phone's cell tower pings from that night."
Mara's stomach dropped. "I don't carry a cell phone."
"Exactly." Vance unfolded the paper. "Your phone—the one registered to your name and address—was pinged by a tower near the library at 11:52 PM. The same tower that picked up a call from the library's landline to 911 at 11:54 PM. Two minutes before the fire was reported."
"That's impossible." The words came out before she could stop them. "I don't own a cell phone. I've never owned a cell phone. They're—"
"Trackable," Vance finished for her. "Yes, they are. And this one is registered to you."
Mara's mind raced, trying to process the implications. Someone had set her up. The Broadcaster—it had to be. He'd known she was getting closer, had taunted her with that message. And now he'd planted evidence to make her look guilty.
"I need to see that record," she said. "The full record. The tower data, the timing, everything."
Vance's eyebrows rose. "You're not in a position to be making requests, Dr. Voss."
"I'm not requesting." She met his eyes, forcing herself to hold his gaze. "I'm telling you that someone is setting me up. The broadcast—the one I reported to you twice—it's real. I've been tracking it. I've been to the naval base. I found a server room there, still powered, running modified equipment. I've been working with a man named Sparks—a former Navy radioman who's been living in the base. He can verify everything I've told you."
"Sparks." Vance wrote the name down on a notepad. "That wouldn't be Leonard Sparks, would it? Discharged from the Navy in 2004 for psychiatric reasons?"
"I don't know his full name. He just goes by Sparks."
"Leonard Sparks has been on our radar for years. He's a paranoid schizophrenic who's been squatting in federal property since his discharge. He's been reported multiple times for erratic behavior—claiming he can hear voices in the static, that the government is monitoring him through the power lines." Vance set down his pen. "You're telling me you've been working with a man who hears voices in the static."
Mara felt the ground shifting beneath her. "He's not crazy. The broadcast is real. I've recorded it. I have the recordings in my shop—"
"We searched your shop this morning."
The words hit her like a physical blow. "You what?"
"Standard procedure when a suspect is identified." Vance's voice was flat, professional. "We found your equipment. We found your notes. We found the recordings you mentioned." He paused, letting the weight of his words settle. "And we found something else. A frequency modulator, hand-built, with a component that matches the one in this evidence bag."
Mara's hands were shaking now. She couldn't stop them. "That's not possible. I've never built a frequency modulator. I've never—"
"Dr. Voss." Vance leaned forward, his voice dropping to something almost gentle. "I've known you for years. I know you keep to yourself. I know you're brilliant—everyone in this town knows that. But the evidence is what it is. The circuit board from the first victim. The cell phone pings. The modulator in your shop. The timing of your movements matching the broadcasts."
"Those broadcasts are predictions," Mara said, her voice cracking. "They're not instructions. I've been trying to stop the deaths, not cause them."
"The first victim was found at the coordinates you gave us. The second victim died at the time you reported. You're the only constant in both cases." Vance sat back. "I'm not saying you're guilty. I'm saying I have enough to hold you for 48 hours while I sort this out. And I intend to do exactly that."
Mara's mind was a hurricane of static, white noise drowning out coherent thought. She thought of the bunker in the forest, the logbook with its list of names. She thought of the final entry she'd seen there, her own name written in careful block letters. She thought of her father, the captain of the *Delphine*, and the truth she was only beginning to uncover.
"The Broadcaster," she said, her voice barely above a whisper. "He's not just predicting deaths. He's targeting people connected to the *Delphine* sinking. The ferry that went down twenty years ago. The victims—the fisherman, the librarian—they were all connected to it somehow."
Vance's expression didn't change, but something flickered in his eyes. "The *Delphine*? That's a cold case. It was ruled an accident—a mechanical failure in the sonar array."
"It wasn't an accident." Mara leaned forward, her hands flat on the table. "I found a logbook in a bunker in the forest. It had the names of the victims, and it had my name. The Broadcaster is targeting me because of my father. He was the captain of the *Delphine*."
Vance was silent for a long moment. When he spoke, his voice was different—quieter, more measured. "Your father was Silas Voss."
"You knew him?"
"I knew of him." Vance's jaw tightened. "I was a junior officer on the *Delphine*'s sister ship, the *Meridian*. We were in port when she went down. I remember the investigation. I remember what they said about Captain Voss."
"What did they say?"
"That he ignored the warnings. That he pushed the ship too hard in bad weather. That his negligence cost forty-three lives." Vance's eyes met hers. "I'm sorry, Dr. Voss. I know that's not easy to hear."
"It's not true." The words came out fierce, surprising even herself. "My father tried to sound the alarm. He was the one who reported the faulty sonar array. The cover-up was ordered by the shipping company. I have proof—"
"What proof?"
Mara opened her mouth to answer, but the words died in her throat. The proof was in the bunker. The logbook. The photo of her father standing next to the mayor. But she couldn't tell Vance about the photo—not yet. Not when she didn't know who she could trust.
"I need more time," she said. "Forty-eight hours. You said you'd give me forty-eight hours."
Vance studied her for a long moment. The fluorescent light buzzed overhead, the faulty ballast humming its discordant note. Somewhere in the building, a phone rang, muffled by walls and distance.
"Twenty-four hours," he said finally. "You get twenty-four hours to bring me something that proves your story. After that, I have to process you formally. I can't hold off the evidence forever."
Mara nodded, her throat tight. "Twenty-four hours."
"One more thing." Vance slid a piece of paper across the table. "This came in this morning. Addressed to you, care of the station. The desk sergeant thought it was suspicious, so he opened it."
Mara looked down at the paper. It was a single photograph, printed on cheap office paper. The image was grainy, taken from a distance, but she recognized the scene immediately: the naval base, the radar dome silhouetted against a gray sky. And in the foreground, a figure standing at the edge of the cliff, looking out at the sea.
The figure was her.
She'd never been to the naval base alone. She'd only gone with Sparks. But the photo showed her standing there, alone, at a time she couldn't remember.
On the back of the photo, in handwriting that looked like it had been written with a fountain pen, was a single line:
*The cartographer maps her own grave.*
Mara's blood turned to ice. She looked up at Vance, but his expression was unreadable.
"Twenty-four hours," he repeated. "Starting now."
She folded the photo and put it in her pocket. Her hands were steady now, the shaking replaced by a cold, focused clarity. The Broadcaster had made his move. He'd tried to frame her, to isolate her, to cut her off from the only people who could help her.
But he'd made a mistake.
He'd given her a deadline.
And Mara Voss was very, very good at solving puzzles under pressure.
She stood up, pushing the chair back with a scrape of metal on linoleum. "I'll need my equipment back."
Vance shook his head. "It's evidence."
"Then I'll work without it." She turned toward the door, then paused. "Chief Vance. When this is over—when I prove I'm innocent—I want you to remember this conversation. I want you to remember that you had a chance to stop this, and you chose to waste it on me."
She walked out into the gray morning light, the photo burning in her pocket, the clock already ticking.
Inside the bag, the circuit board she'd pulled from the fisherman's pocket gleamed under the harsh light. Hand-soldered joints, traces etched with acid that had bitten too deep in places. She'd studied it for hours in her shop, mapping every connection, every component. She knew its geography better than she knew the streets of Port Blane.
"Recognize this?" Vance asked.
He leaned back in his chair, arms crossed. His uniform shirt strained at the shoulders, and there was a coffee stain on his tie that looked days old. He'd been in the navy once, she remembered. Someone had told her that once. Or maybe she'd read it somewhere.
"It's the component I found on the first victim," she said. "I gave it to your officer at the scene. Along with my statement."
"That's not what I asked." Vance tapped the bag with one thick finger. "I asked if you recognize it. As in, have you seen it before? In your shop, maybe. In your work."
Mara's hands were flat on the table, palms down. She could feel the vibration of the faulty ballast through the metal, a low thrum that matched the tension building in her chest. "I've never seen a component like this before. The soldering technique is unusual. The substrate material isn't standard—it's a phenolic composite that hasn't been manufactured commercially since the early nineties. The traces are hand-etched, which suggests—"
"Dr. Voss." Vance's voice cut through her technical ramble like a blade. "Where were you on the night of the librarian's fire?"
The question landed like a physical blow. She'd known it was coming—had known the moment she saw the evidence bag that this conversation was inevitable—but the directness of it still caught her off guard.
"I was in my shop. Working."
"Alone?"
"Yes."
"Anyone see you? Call you? Anything that can verify that?"
Mara thought about the long hours of that night. She'd been mapping the sub-audible sonar signature she'd decoded from the broadcast, cross-referencing it against the naval base's decommissioned frequency allocations. She'd made coffee at 11:47 PM. She'd spilled some of it on her workbench and cleaned it up with a rag she'd then thrown in the hamper. She'd heard the foghorn at the lighthouse pier sound three times, which meant the fog was thick enough to warrant the full sequence.
None of that was verifiable by anyone but herself.
"No," she said.
Vance nodded slowly, like he'd expected that answer. He reached into his pocket and pulled out a folded piece of paper, sliding it across the table next to the evidence bag. "This is a record of your phone's cell tower pings from that night."
Mara's stomach dropped. "I don't carry a cell phone."
"Exactly." Vance unfolded the paper. "Your phone—the one registered to your name and address—was pinged by a tower near the library at 11:52 PM. The same tower that picked up a call from the library's landline to 911 at 11:54 PM. Two minutes before the fire was reported."
"That's impossible." The words came out before she could stop them. "I don't own a cell phone. I've never owned a cell phone. They're—"
"Trackable," Vance finished for her. "Yes, they are. And this one is registered to you."
Mara's mind raced, trying to process the implications. Someone had set her up. The Broadcaster—it had to be. He'd known she was getting closer, had taunted her with that message. And now he'd planted evidence to make her look guilty.
"I need to see that record," she said. "The full record. The tower data, the timing, everything."
Vance's eyebrows rose. "You're not in a position to be making requests, Dr. Voss."
"I'm not requesting." She met his eyes, forcing herself to hold his gaze. "I'm telling you that someone is setting me up. The broadcast—the one I reported to you twice—it's real. I've been tracking it. I've been to the naval base. I found a server room there, still powered, running modified equipment. I've been working with a man named Sparks—a former Navy radioman who's been living in the base. He can verify everything I've told you."
"Sparks." Vance wrote the name down on a notepad. "That wouldn't be Leonard Sparks, would it? Discharged from the Navy in 2004 for psychiatric reasons?"
"I don't know his full name. He just goes by Sparks."
"Leonard Sparks has been on our radar for years. He's a paranoid schizophrenic who's been squatting in federal property since his discharge. He's been reported multiple times for erratic behavior—claiming he can hear voices in the static, that the government is monitoring him through the power lines." Vance set down his pen. "You're telling me you've been working with a man who hears voices in the static."
Mara felt the ground shifting beneath her. "He's not crazy. The broadcast is real. I've recorded it. I have the recordings in my shop—"
"We searched your shop this morning."
The words hit her like a physical blow. "You what?"
"Standard procedure when a suspect is identified." Vance's voice was flat, professional. "We found your equipment. We found your notes. We found the recordings you mentioned." He paused, letting the weight of his words settle. "And we found something else. A frequency modulator, hand-built, with a component that matches the one in this evidence bag."
Mara's hands were shaking now. She couldn't stop them. "That's not possible. I've never built a frequency modulator. I've never—"
"Dr. Voss." Vance leaned forward, his voice dropping to something almost gentle. "I've known you for years. I know you keep to yourself. I know you're brilliant—everyone in this town knows that. But the evidence is what it is. The circuit board from the first victim. The cell phone pings. The modulator in your shop. The timing of your movements matching the broadcasts."
"Those broadcasts are predictions," Mara said, her voice cracking. "They're not instructions. I've been trying to stop the deaths, not cause them."
"The first victim was found at the coordinates you gave us. The second victim died at the time you reported. You're the only constant in both cases." Vance sat back. "I'm not saying you're guilty. I'm saying I have enough to hold you for 48 hours while I sort this out. And I intend to do exactly that."
Mara's mind was a hurricane of static, white noise drowning out coherent thought. She thought of the bunker in the forest, the logbook with its list of names. She thought of the final entry she'd seen there, her own name written in careful block letters. She thought of her father, the captain of the *Delphine*, and the truth she was only beginning to uncover.
"The Broadcaster," she said, her voice barely above a whisper. "He's not just predicting deaths. He's targeting people connected to the *Delphine* sinking. The ferry that went down twenty years ago. The victims—the fisherman, the librarian—they were all connected to it somehow."
Vance's expression didn't change, but something flickered in his eyes. "The *Delphine*? That's a cold case. It was ruled an accident—a mechanical failure in the sonar array."
"It wasn't an accident." Mara leaned forward, her hands flat on the table. "I found a logbook in a bunker in the forest. It had the names of the victims, and it had my name. The Broadcaster is targeting me because of my father. He was the captain of the *Delphine*."
Vance was silent for a long moment. When he spoke, his voice was different—quieter, more measured. "Your father was Silas Voss."
"You knew him?"
"I knew of him." Vance's jaw tightened. "I was a junior officer on the *Delphine*'s sister ship, the *Meridian*. We were in port when she went down. I remember the investigation. I remember what they said about Captain Voss."
"What did they say?"
"That he ignored the warnings. That he pushed the ship too hard in bad weather. That his negligence cost forty-three lives." Vance's eyes met hers. "I'm sorry, Dr. Voss. I know that's not easy to hear."
"It's not true." The words came out fierce, surprising even herself. "My father tried to sound the alarm. He was the one who reported the faulty sonar array. The cover-up was ordered by the shipping company. I have proof—"
"What proof?"
Mara opened her mouth to answer, but the words died in her throat. The proof was in the bunker. The logbook. The photo of her father standing next to the mayor. But she couldn't tell Vance about the photo—not yet. Not when she didn't know who she could trust.
"I need more time," she said. "Forty-eight hours. You said you'd give me forty-eight hours."
Vance studied her for a long moment. The fluorescent light buzzed overhead, the faulty ballast humming its discordant note. Somewhere in the building, a phone rang, muffled by walls and distance.
"Twenty-four hours," he said finally. "You get twenty-four hours to bring me something that proves your story. After that, I have to process you formally. I can't hold off the evidence forever."
Mara nodded, her throat tight. "Twenty-four hours."
"One more thing." Vance slid a piece of paper across the table. "This came in this morning. Addressed to you, care of the station. The desk sergeant thought it was suspicious, so he opened it."
Mara looked down at the paper. It was a single photograph, printed on cheap office paper. The image was grainy, taken from a distance, but she recognized the scene immediately: the naval base, the radar dome silhouetted against a gray sky. And in the foreground, a figure standing at the edge of the cliff, looking out at the sea.
The figure was her.
She'd never been to the naval base alone. She'd only gone with Sparks. But the photo showed her standing there, alone, at a time she couldn't remember.
On the back of the photo, in handwriting that looked like it had been written with a fountain pen, was a single line:
*The cartographer maps her own grave.*
Mara's blood turned to ice. She looked up at Vance, but his expression was unreadable.
"Twenty-four hours," he repeated. "Starting now."
She folded the photo and put it in her pocket. Her hands were steady now, the shaking replaced by a cold, focused clarity. The Broadcaster had made his move. He'd tried to frame her, to isolate her, to cut her off from the only people who could help her.
But he'd made a mistake.
He'd given her a deadline.
And Mara Voss was very, very good at solving puzzles under pressure.
She stood up, pushing the chair back with a scrape of metal on linoleum. "I'll need my equipment back."
Vance shook his head. "It's evidence."
"Then I'll work without it." She turned toward the door, then paused. "Chief Vance. When this is over—when I prove I'm innocent—I want you to remember this conversation. I want you to remember that you had a chance to stop this, and you chose to waste it on me."
She walked out into the gray morning light, the photo burning in her pocket, the clock already ticking.