Detective Mike Russo stood outside the warehouse district, the evening mist clinging to his overcoat like a second skin. Beside him, his partner Detective Sarah Chen checked her watch, her expression unreadable as always. They'd been chasing this new thief for three weeks now. She was a ghost who left no fingerprints but always took high-value items from secured locations. They didn't have a name or a description or a blurry security camera photo. It was... frustrating.
"Intel says she hits the electronics warehouse tonight," Sarah said, her voice low. "Third time this month."
Mike nodded, his mind strangely fuzzy whenever they discussed this case. He kept having flashes of a soothing voice, warm eyes, and the scent of lavender. Memories that didn't quite fit together. Or fit anywhere, for that matter. He'd been seeing a trauma counselor lately, Dr. Selena Monroe, after that shootout downtown last month. She'd helped him work through the anxiety, and she assured him that these strange out-of-body feelings weren't uncommon for someone in his position. They were nothing to worry about or to dwell on.
He knew Sarah had been seeing a counselor too, though she never talked about it. Professional boundaries, she'd said when he'd asked once. Mike found himself wondering what her voice sounded like when she wasn't all business, what she looked like when she let her guard down. He shook his head. These were inappropriate thoughts for a partner, especially since they were both married. And when he'd mentioned feeling these things about his nameless partner to Dr. Monroe, she'd told him it was totally natural to think such things, even if it was inappropriate. They spent so much time together, it wasn't really a surprise. It was nothing to worry about or to dwell on.
The two detectives slipped inside the warehouse, careful to make no noise. And as they rounded the corner, they saw her for the first time. A woman dressed all in black with long, wavy, black hair. Unmasked, which caused Mike's heart to leap into his throat. He knew that he should be quiet and try to get the jump on her, but his shock overcame him.
She froze when she saw them, then broke into a smile that didn't quite reach her eyes.
"Detectives Russo and Chen," she said, her voice sending a strange warmth through Mike's body. "What a pleasant surprise?"
"Hands where we can see them, Selena," Sarah commanded, drawing her weapon slowly. Mike realized that if Sarah knew Selena's first name then she must be her councilor, too.
Selena laughed softly. "Now, now, no need for hostility." She locked eyes with Mike. "Remember our sessions, Michael? When I told you that whenever you hear me say 'deeply relaxed,' you'll feel completely calm and obedient?"
Mike's vision blurred, his gun suddenly feeling heavy in his hand. "Deeply relaxed," Selena repeated, and his arm lowered without his permission.
Sarah turned to him. "Mike, what the hell??"
"Ah, Sarah," Selena said, shifting her attention. "Remember how we worked through your control issues? How I told you that whenever you hear me say 'completely trusting,' you'll believe everything I say?"
Sarah's expression softened, her weapon lowering slightly. "Completely trusting," Selena whispered, and Sarah's face went slack, her eyes glazing over.
"Excellent," Selena purred, stepping closer. "Now I'm not a thief, and this is my property. So there's nothing wrong with me putting it all in my truck over there. Both of you, help me load these items up."
"Okay," Sarah said, suddenly believing every word.
"Yes, Mistress," Mike replied, not caring what was true, only needing to obey.
"You've both been such good subjects," Selena said as they worked. "I honestly didn't realize you were partners. What a delicious coincidence."
When the van was loaded, Selena guided them back to their unmarked car. "Now, here's what you're going to do," she instructed, her voice weaving through their consciousness like silk. "You're going to return to the station and report that the investigation came up empty. No evidence, no leads. Just like always. Then you're going to forget you ever saw me here tonight."
Mike nodded, already rehearsing the report in his mind. Sarah beside him seemed to be doing the same.
"But first," Selena added with a wicked smile, "a little reward for being such obedient little cop slaves." She stepped closer to Sarah, lowering her voice. "Sarah, you've always been too tightly wound. From now on, whenever you're with Mike, you'll feel an overwhelming desire to sleep with him. The more inappropriate it feels, the more you'll want it."
She turned to Mike next. "And Michael, you've been so stressed lately. Whenever you're with Sarah, you'll find yourself irresistibly attracted to her. You'll fantasize about her constantly, and you'll act on those fantasies whenever possible."
Mike felt a strange heat building in his groin as he looked at Sarah. Those flashes and feelings he'd been harboring suddenly roaring to the surface as a powerful need.
Sarah's eyes had cleared slightly, and she was looking at him with a new expression: hunger, confusion, and something like recognition. Her cheeks flushed, and she shifted uncomfortably.
"Perfect," Selena said, clapping her hands together. "Now go on, back to work. And do try to enjoy your new... working relationship."
Mike drove back to the station, his mind a fog of conflicting thoughts. He knew something was wrong, but he couldn't quite grasp what. Beside him, Sarah kept glancing at him, her fingers tapping nervously on her thigh.
"I need to talk to you about something," she said as they pulled into the parking garage. "Something's not right about this case."
"Meet me after shift," Mike found himself saying, the words coming out before he could stop them. "My place. Jenna's visiting her sister."
Sarah bit her lip, then nodded. "Okay. My husband's working late anyway."
The next few hours were a blur of paperwork and false reports. Mike couldn't concentrate, his mind drifting to scenarios involving Sarah that made his face flush and his pants tighten. Every time their eyes met across the desk, something electric passed between them.
When their shift finally ended, they drove separately to Mike's place, the tension thick in the air.
"So you said something wasn't right with the case?" Mike asked, suddenly very aware of his breathing.
"Yeah," Sarah replied turning to face him as she unbuttoned her shirt. "You haven't been fucking me nearly enough."
As soon as she spoke, he was on her, his mouth crashing against hers as he backed her against the wall.
"I don't understand this," she gasped between kisses, her hands already working at his belt. "I shouldn't want this."
"Shut up," Mike growled, lifting her onto his kitchen counter. "Just shut up and let me."
"Yes," she moaned as they stumbled back the hall to the bedroom. Sarah's eyes lingered on every photo of Mike and his wife, each one burning the betrayal deeper into her mind and driving her more and more wild. Mike tried not to look at Jenna's face on the bedside table as he pumped his cock in and out of his partner.
"Fuck me, Mike!" Sarah cried. "Fuck me like you've never fucked your wife! Fuck me in all the ways she'd never let you!"
"Jenna," Mike whimpered as he flipped Sarah around and shoved his cock into her ass, causing her eyes to turn totally white as she screamed in ecstasy.
In the morning, Sarah left his house, disheveled and cum soaked, but utterly satisfied.
"See you at the precinct," she said to him with a wink, eyes once again glancing over his shoulder to the photo of Jenna on the wall.
Mike closed the door and immediately picked up the phone.
"Hi, I need to schedule an emergency session with Dr. Monroe," he told the receptionist. "It's extremely important."
This story was originally requested on my old blog by @avenger343 with the following ask:
"undercover detectives, male and female are investigating a villainess, unaware that they’re her sleeping agents and romantic partners"
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