Case of the Poison Powder Chapter 9
Margaret Mitchell Mysteries - The cozy cousin of Carson Crime Files
The Case of the Poison Powder
(Miss Chapter 8? Find it Here) Or start with the first chapter!
Chapter 9
The AgroSynthetics Research and Development wing hummed with a different energy than the main facility. Where the storage areas were all concrete and industrial efficiency, R&D felt almost academic. More laboratory than warehouse.
A security officer escorted Margaret through a greenhouse corridor where experimental plants thrived under grow lights, their leaves impossibly green.
“Mr. Liu’s office is at the end,” the officer said, gesturing toward a glass-walled space visible through the foliage.
Nick Liu’s office was a study in contradictions. Everything was precisely organized. Pens lined up at right angles, files color-coded, not a paper out of place. But the walls were a different story. Between the expected professional certifications and a diploma from MIT, Margaret noticed an old concert poster for a benefit show: “Earth First! Rally - 1999.” Next to it hung a faded photograph of protesters chaining themselves to logging equipment, and unless she was mistaken, that was a much younger, longer-haired version of Nick Liu in the foreground, grinning fiercely at the camera. An EPA Environmental Excellence Award from 2007 hung beside these relics. The plants visible through his window were labeled with careful scientific notation, but someone had also stuck a small handwritten sign among them: “Talk to your plants! They’re listening!”
Nick looked up from his computer as Margaret entered, his expression shifting from distracted to guarded in half a second. He was younger than she’d expected—early forties, maybe—with tired eyes and the pallor of someone who spent too much time under fluorescent lights.
“Ms. Mitchell.” He stood, extending a hand across the desk. His grip was firm, professional, but his eyes kept darting toward the door like he was calculating escape routes. “Chris Webb mentioned you were looking for me.”
Margaret shook his hand, noting the nervous energy. Up close, she could see a small tattoo peeking out from under his shirtsleeve, some kind of leaf or branch. The kind of thing you got at twenty and covered up at forty.
“I appreciate your willingness to meet with me, Mr. Liu.” Margaret settled into the chair across from his desk.
Nick adjusted a pen on his desk, aligning it precisely with the edge of a notepad. “I’ve been trying to reach you for several days. You’ve been difficult to find.”
“I keep irregular hours. It’s the nature of research work.” His voice remained smooth, but something flickered behind his eyes—annoyance, maybe, or wariness. “Late nights in the lab, early mornings reviewing data. My schedule doesn’t conform to traditional office hours.”
Margaret made a note. “Mr. Liu, I’m representing Sade Jalloh. I understand you’re one of only three people with access to the storage room where the theft occurred.”
“That’s correct.” He leaned back in his chair. “Myself, Chris Webb, and Ms. Jalloh. Standard protocol for restricted storage areas.”
“Can you tell me about the security system? You designed it, I understand.”
“Three years ago, yes. State-of-the-art RFID badge technology, integrated camera systems, digital logging.” Pride crept into his voice despite his careful neutrality. “It’s one of the most secure facilities of its kind in the region.”
“And yet someone managed to bypass the cameras on January 8th while leaving the badge logs intact.” Margaret kept her eyes on his face. “That suggests someone with intimate knowledge of the system.”
Nick’s expression didn’t change. “Security systems are only as strong as their weakest point. Usually that’s human error.”
“Is that what you think happened? Human error?”
“I think the police have made an arrest based on digital evidence.” He reached for a worn stress ball on his desk and squeezed it once. “The badge logs don’t lie, Ms. Mitchell.”
“Badges can be cloned.”
“Theoretically.” The stress ball squeezed again. “But it requires proximity to the original badge, specialized equipment, and technical knowledge. Not exactly something the average person can accomplish.”
Margaret leaned forward slightly. “But someone with your expertise could do it.”
The room went very quiet. Through the glass walls, Margaret could see researchers moving among the experimental plants, oblivious to the tension in the director’s office. The hum of lab equipment seemed suddenly louder.
“Are you accusing me of something, Ms. Mitchell?” Nick’s voice had cooled considerably.
“I’m trying to understand who had the means and opportunity to commit this theft.” Margaret kept her tone even, reasonable. “You designed the security system. You had access to the storage room. You work odd hours, so your presence in the building late at night wouldn’t raise questions.”
“I also have no motive.” Nick set down the stress ball with deliberate precision. “I’m the director of Research and Development. I make a comfortable salary. I have no financial troubles, no criminal record, no reason whatsoever to steal pesticides.”
“Where were you on the night of January 8th?”
His jaw tightened. “I don’t have to answer that.”
“You don’t,” Margaret agreed. “But your refusal is noted. And it will look interesting to a jury if this case goes to trial.”
“Then I suppose we’ll see each other in court.” Nick stood. “Is there anything else, Ms. Mitchell?”
Margaret didn’t stand. “Actually, yes. I’d like to understand something. AgroSynthetics conducted a thorough inventory after the theft. Only chlorpyrifos was taken—twenty-five kilograms worth approximately eighteen hundred dollars.” She paused, watching his reaction. “But you store much more valuable materials in that facility, don’t you?”
Something shifted in his expression—a flicker of surprise, quickly masked. “We store various compounds.”
“Such as?”
He was quiet for a moment, clearly weighing how much to reveal. “Experimental formulas. Proprietary compounds we’re developing for commercial release. Some of them represent years of research and development.”
“And their value?”
“Anywhere from thousands to hundreds of thousands of dollars per kilogram, depending on the compound.” He sat back down slowly, curiosity apparently overcoming his desire to end the meeting. “Why do you ask?”
“Because it doesn’t make sense.” Margaret leaned back in her chair, meeting his eyes directly. “If someone with intimate knowledge of this facility, someone who knew what was stored where and what it was worth, was going to steal something, why would they take the least valuable option?”
Nick was quiet, his fingers finding the stress ball again. Squeeze, release. Squeeze, release.
“Unless,” Margaret continued, “the thief didn’t have that knowledge. Unless they were specifically targeting chlorpyrifos for a reason that had nothing to do with monetary value.”
“Or,” Nick said slowly, “unless the thief was exactly who the evidence suggests. Someone who panicked, who acted emotionally rather than rationally, who grabbed what was accessible without thinking through the consequences.”
“You’re suggesting Sade Jalloh, a woman with an MBA who’s worked here for fifteen years, suddenly became stupid?”
“I’m suggesting that people under stress make poor decisions.” He set down the stress ball and folded his hands on his desk. “Ms. Mitchell, I understand you’re doing your job. But the evidence is what it is. Ms. Jalloh’s badge was used. The logs are clear. And while I sympathize with her situation, I can’t help you build a defense based on speculation.”
Margaret studied him. He was calm, professional, carefully neutral. But there was something underneath. The way his eyes kept darting to the door. Chris Webb had been right. Nick Liu was jumpy.
“What’s in those experimental compounds, Mr. Liu? The valuable ones?”
His eyebrows rose. “That’s proprietary information.”
“Humor me. Generally speaking.”
He sighed, as if dealing with a particularly persistent child. “Advanced pesticide formulas. Compounds that are more effective, more targeted, less environmentally harmful than current options. Some are designed for specific crops or pests. Others are broad-spectrum applications.” He gestured toward the greenhouse visible through his office window. “We test them on various plant species, document their efficacy, refine the formulas. It’s years of work before anything reaches market.”
“And if someone stole those formulas—”
“They’d have something worth selling to competitors. Yes.” Nick’s mouth twisted. “Which is why we have such stringent security protocols. Why only three people have access to restricted storage. Why we monitor everything so carefully.”
“And yet,” Margaret said softly, “someone still got in.”
Nick’s fingers tightened on his desk. “Yes. Someone with Ms. Jalloh’s badge.”
Margaret stood, gathering her briefcase. She’d pushed as far as she could for now. “One more question, Mr. Liu. If you were going to steal from this facility, hypothetically, what would you take?”
He looked at her for a long moment. “The experimental compounds. Without question. Specifically, our new neonicotinoid alternative. We’ve invested five years and two million dollars in development. A competitor would pay handsomely for that formula.”
“And how much of that compound do you currently have in storage?”
“Approximately two kilograms.” His eyes narrowed. “Why?”
“Because,” Margaret said, moving toward the door, “that’s what a smart thief would take. Not bulk chlorpyrifos any farmer can buy with the right license. Which suggests to me that whoever committed this theft either wasn’t smart, or wasn’t interested in money.”
She paused at the door, hand on the handle. “Thank you for your time, Mr. Liu. I’m sure we’ll be speaking again soon.”
“Ms. Mitchell.” His voice stopped her. She turned back. “For what it’s worth, I hope your client is innocent. I’ve known Sade for years. She’s always been reliable, professional. It would be ... disappointing if she threw all that away.”
“She didn’t throw anything away,” Margaret said firmly. “Someone took it from her. And I’m going to prove it.”
She walked out of his office, through the greenhouse with its thriving experimental plants, back through the bustling research lab. The security officer appeared to escort her out, and she followed him through the keycard-locked doors, down the hallway, back to the bright atrium.
Only when she reached her car did she pull out her phone. Still nothing from Katherine. She tried calling again.
This time, Katherine answered on the first ring. “Mags—”
“I just talked to Nick Liu,” Margaret said, sliding into her car. “Kat, something’s not right. He refused to provide an alibi for January 8th. And he confirmed what I suspected—there are compounds in that facility worth hundreds of thousands of dollars. But the thief took—”
“Margaret!” Katherine’s voice cut through, sharp and urgent. “We found the pesticides.”
Margaret’s hand froze on her keys. “What?”
“We just found all twenty-five kilograms of chlorpyrifos. About an hour ago.”
“Where?” Margaret’s heart was pounding now, her mind racing ahead to what this meant.
“In a warehouse on the east side. We were working the Ames case—it’s complicated, I’ll explain later. But Margaret, this wasn’t just theft for profit. This was...” Katherine paused. “The police think it was a bioterrorism plot. Maps of Baltimore, D.C., and Annapolis. Equipment for mass poisoning.”
Margaret sat in stunned silence, her grip tightening on the phone. “Then Sade—”
“I don’t know yet.” Katherine’s voice was careful, professional. “We need to find out if there’s any connection between the people they arrested and your client. But this just got a lot bigger than a simple theft case.”
“Bioterrorism,” Margaret whispered. “Dear God.”
“FBI and Homeland Security are already involved. I’ll get you more information as soon as I have it.” Katherine paused. “Margaret, you need to understand something. Once federal agencies get involved in a bioterrorism case, they don’t let go. Even if Sade had nothing to do with the end use, the U.S. Attorney’s office will want someone to prosecute for the supply chain. And right now, all the digital evidence points to her badge accessing that storage room.”
Margaret’s stomach clenched. “You’re saying even if we prove she was in Wilmington—”
“I’m saying the feds play a different game. Prove innocence or negotiate a deal. There’s no middle ground.”
Stay tuned for Chapter 10, next week!
Can’t wait? Paid Subscribers receive full access to “The Case of the Poison Powder” right now. If you’d like to get full novella now, you can upgrade your subscription here.
Margaret Mitchell, her white terrier Spotty, and her gang at the local nursing home tackle Baltimore mysteries with pluck, perception, and palaver.
In anticipation of the full release of this novella, I’m releasing one chapter a week to all free subscribers.



