A/N: Sorry for the late update, I hope you'll like this chapter. :) And thanks again for TempestJuvano, my wonderful beta-reader! Warning: explicit M/M scene in this chapter - if it disturbs you, just skip it, if not, then...enjoy the smut ;)

Chapter 9 – An encore

Lucifer barged into the lieutenant's office like a thunderstorm. He shut the door close with a loud boom and stared menacingly at Pierce. His eyes, red-rimmed due to the lack of sleep, and his hair a bit tousled, he thought he looked like he felt.

All last night, he'd tossed and turned, his thoughts gravitating to his conversion with the Detective, reiterating through his head. Emotions were still new for him, and he could barely deal with one at a time. But a storm of bloody feelings had attacked him, left him ravaged.

For a moment, he'd felt his chest tighten in excitement – the Detective was still attracted to him. But her voice boomed over his feelings – "you can get me out of your system, and I can do the same" as though he hadn't tried, over and again. She didn't want anything else from him, just to – satisfy an idling curiosity, lingering feelings. Her words haunted him, incessantly.

He went down to his club hoping that getting into some debauchery, some shenanigans might suppress the bitterness that these thoughts had stirred in him, but his plan hadn't worked. The Detective's request popped into his mind every time he approached a gorgeous woman or handsome man and his mood turned sour in an instant. He decided to go back to the penthouse and drink his entire liquor stock in hope that it would numb his agitated mind. But this second plan was sabotaged as well by his supernatural metabolism. As a last resort, he tried to sleep, but couldn't; he ruminated over the Detective's words all night long.

How had this absurd idea occurred to her anyway? Pierce must be behind this. Of course. All of this was part of his evil plan somehow. Lucifer clung to this thought desperately, not being able to think of any alternative, why Chloe had made that request. By the time the sun rose, he was determined to find out what nefarious intent the immortal arsehole had.

And said immortal arsehole was looking at him questioningly now.

"It's time for you to come clean." Lucifer glared at him. When Pierce didn't react, except from frowning even deeper, he continued, "Don't think I believe that this was all the Detective's idea," he spat.

The lieutenant's expression changed as he realized what Lucifer was talking about.

"Ah, that," he sighed and scratched his neck. "Well, you better believe that it was her idea."

"Oh, come now! You can't think I'm that naïve. I'm sure, this is just a part of some elaborate manipulation of yours," he said as he stepped closer to his desk, towering above him. "But don't worry, I will find out the truth."

Pierce stood up slowly and held his gaze. "There is nothing to find out," he said calmly. "But if you don't believe me, then go ahead, try your thing on me again. And then you will see that I didn't lie. I just…" he averted his gaze and ran his hand through his hair. "I want to give her what she longs for. Even if it is a threesome that includes you."

Lucifer studied him carefully.

"How do you know that she really wants…this?" he asked suspiciously. He'd straightened, training his eyes intently onto Pierce's face.

Pierce sat back and took a deep breath.

"She talked a lot about her current case the other day and I could see that she was curious. We talked further on the topic, one thought followed another, and all of a sudden, we decided to have a go at it. No big deal." He leaned back a bit and narrowed his eyes. "What I don't understand, why does it bother you so much? I thought you were always up for a little fun. Especially with Chloe," he smirked at him.

Lucifer scoffed and adjusted his cufflinks.

"I am always up for a little fun," he said, still fiddling with his cuffs. Why on earth was he suddenly so nervous? Damn Pierce, trying to throw him off balance, but he wouldn't succeed. He decided that the best defence is offence.

"I'm just surprised that the Detective came up with this idea. And, you know, there is something else. She told me that you agreed that I would be a good choice for a threesome. I couldn't help but wonder why? You obviously don't like me, so the only explanation is that you want an encore," he grinned at Pierce wolfishly.

And it did the trick. An intense red blush crept up Pierce's cheeks as he realized what Lucifer was referring to. Lucifer's grin widened at his reaction.

"I knew it!" he slapped the desk. "You can't deny that you missed your husband's incredible stamina," he teased.

Pierce held up his finger to silence him.

"It was a fake marriage and it was only one occasion," he said.

"One magical occasion," Lucifer smirked lewdly.

The undercover operation had lasted only for a few days, but it had been enough to seduce Pierce. Lucifer was bored and it was a funny challenge at the time. Pierce looked quite uncomfortable in his role as Lucifer's husband and first, he was just teasing him with it. But if he was honest, he felt they had a strange connection back then. Two immortals who suffered from his Father's punishment. They really seemed to understand each other.

It had happened after they had caught and released the 'neighbourhood watchdog', and they had to go back to their fake home to maintain their cover.

Lucifer was sauntering around in the house wearing only his boxer briefs like he was at home and noticed Pierce's occasional glances towards his half-naked body. He hadn't planned to tempt him originally, but he started to find the thought of sleeping with him interesting.

Then they bumped into each other when Pierce left the bathroom with only a towel around his hips. Lucifer eyed him from head to toe; he had to admit that the blue-eyed lieutenant looked quite good. He held out his hand slowly, leaving time for Pierce to retreat, but he didn't move, so he slid down his fingers on the lieutenant's defined abs. When he shivered under his touch, Lucifer knew he would succumb to his devilish charm.

They held each other's gaze for a moment before their lips crushed. Lucifer grabbed the back of his head and guided him to the bed, not breaking the kiss. He pushed Pierce onto the bed, himself leaning over him. The towel and his boxer briefs were still between them, but he could feel Pierce's hard member pressing into his. He wedged his hand between their bodies and slipped it under the towel, while his mouth travelled to his carotid. He grinned into his skin when his fingers found the lieutenant's shaft. Quite impressive.

He moaned weakly when Lucifer gave it an experimental stroke, which spurred Lucifer's arousal, and he gripped him more firmly. After a few more strokes, Pierce pulled back and caught his eyes. His hands slid involuntarily to Lucifer's hips and played with the band of his underwear.

Before he could react, Pierce spun their bodies, pinned him to the mattress by his wrists and kissed him eagerly. His tongue slid over Lucifer's bottom lip, begging for entrance. Lucifer opened his mouth and their tongues started a dizzying dance. After a few minutes, Marcus broke the passionate make-out and placed his lips on Lucifer's neck. He licked into the hollow at the base of his throat and this sensation elicited a moan from Lucifer. He kissed his way down to his abdomen and when he reached his v-line, he hooked his fingers into the hem of his briefs and pulled them down hastily.

As soon as he got rid of the garment, he grabbed Lucifer's already hard cock and started to stroke it with a steady pace. His hand was firm, but not rough. He applied the perfect pressure and when his fingers reached the top, his thumb massaged the head a little bit, raising the pleasure. Lucifer opened his eyes at that moment to enjoy the visual, when Pierce licked his member, his mouth suddenly all over it. He gasped and grabbed the sheet forcefully as Pierce's head began bobbing between his thighs. After a while, he licked his fingers and slide them below Lucifer's testicles. He didn't rush, just played a little bit with his tight hole. Lucifer was quite impressed by the lieutenant's skills so far, but he wanted more. He tugged on his greyish locks, which caught his attention.

"Top or bottom?" Lucifer asked him, his gaze hooded with desire.

"I prefer versatile," Pierce smirked at him, his voice a little hoarse.

"Really?" he grinned back approvingly. When Pierce nodded, he turned back a little to reach the nightstand. Stretching his hand, he could just reach and pull out the drawer. He fumbled for a few seconds, then took out a little bottle of lube. When he saw Pierce's surprised look, he shrugged.

"What? I'm always prepared for the best scenarios," he grinned at him, then tilted his head and formulated his suggestion, "Since you have proven your skills, you can have a go first."

Marcus's gaze turned predatory as he grabbed the tiny bottle. He applied some lube on his fingers and continued his ministrations. This time he was more purposeful; he wanted to prepare Lucifer for the main action. When he was satisfied, he retreated and leaned on his knees, while he spread some lube on his shaft. He decided that he didn't want to change position, for the time being, so he simply positioned himself between Lucifer's thighs.

He guided his cock to Lucifer's hole and prodded experimentally. Lucifer closed his eyes and let out a groan when the head of the lieutenant's member forced his way past his strong muscles. Pierce stopped and waited for him to adjust, and continued only when Lucifer wiggled his hips down, urging him to push further. He obliged immediately and set a slow pace with deeper and deeper thrusts. Lucifer's hips met his moves, which soon started to be faster.

He grabbed Lucifer's knees and pushed them back a little to change the angle. With Lucifer's ass lifted slightly, he could thrust deeper, and from the sinful voices the black-haired man emitted, he was sure, he started to hit his prostate. The occasional clenches of Lucifer's muscles pushed him towards the edge. After a few powerful thrusts, he stilled and emptied himself in Lucifer, while he groaned loudly.

Pierce all but collapsed next to him on the bed. They were both panting heavily at this point. Lucifer let him bask a little in the afterglow before he grazed his nails slightly along his side from his waist to his broad shoulder. He opened his eyes and shivered under his touch. When Lucifer's fingers started to travel back to the direction of his waist, he nodded slightly.

This was the only sign he needed. He lunged forward and kissed the lieutenant firmly. He grabbed his solid ass and pulled him flush against his body. Marcus groaned when Lucifer's erection pressed to his groin. Lucifer broke the kiss and crawled lower until his head was in line with Marcus's thighs. He turned him from his side to his stomach and parted his cheeks. The lieutenant was still weak from his previous orgasm, so he decided to go slow on him. He kissed, licked, and nibbled his most sensitive parts with great expertise. Pierce whined a little, but the grinding moves of his hips indicated that he wanted more.

Lucifer applied some lube on his fingers and started to play with his ass. It took only a few minutes, and he felt that the lieutenant was ready for the main action. He climbed up and turned Pierce again on his side. This time Lucifer laid behind him and embraced him like a big spoon, his throbbing cock was nudging his ass. He grabbed the base of his shaft after he applied a considerable amount of lube on it and guided it towards his entrance.

Pierce winced a little when he started to push in, so he stopped and began to massage his gluteal muscles to help him relax.

"It's okay," Pierce muttered and glanced back at Lucifer. "I'm just a little bit out of practice," he huffed a somewhat forceful chuckle. It was true. He had been trying to distance himself from other humans for some time, and this included sex in any form, especially with other men. Although he experimented quite a lot (he had time for it, obviously), he always preferred to be with women, but he apparently wasn't totally immune to Lucifer's charm despite knowing his true nature.

Lucifer waited patiently until the lieutenant relaxed enough to continue. He knew that although Pierce was immortal, he still could feel pain, and he was also well aware of his own size, so he wanted to be careful. Lucifer's invulnerability allowed him to be very adventurous in sex; that's why he adjusted so easily to Pierce's quite impressive dick.

The Detective's face popped into Lucifer's head, unbidden, at that moment. How would – what would it be like, to have her here, right now? Would this be the same, as it was with other humans or would it be something else? Something Lucifer was unable to put into words, even in his imagination.

His train of thoughts got back on track when he felt Pierce's palm on his thigh. He squeezed it lightly and ground his hip back. Lucifer could read these signals and started to thrust forward. He was halfway inside, but he didn't hurry. He moved gently and slowly, burying himself deeper with each thrust. By the time he was fully inside him, Pierce had been moaning lasciviously. He held the lieutenant tight, his back pressing to Lucifer's front while Lucifer increased the pace to the delight of both of them.

Lucifer knew this position was good for the beginning, but it wasn't enough anymore. He rolled their bodies, so Pierce was now lying on his stomach. His legs were spread out, and Lucifer's body wedged between his thighs. This new position allowed Lucifer to thrust deeper and with more force. Pierce's loud 'ah's and occasional groans indicated that he enjoyed the more powerful pouncing very much. Lucifer reached his climax very quickly in this position and he came hard with one last fierce thrust. His cock was still throbbing in the lieutenant's occasionally clenching, thoroughly stretched hole as he collapsed on him. After a few seconds, when he regained some strengths, he pulled out of him and returned to his previous large spoon position.

They didn't talk much that evening, and neither of them had brought up their little encounter ever again. Until now.

Their staring contest was broken by Pierce who was still beet red.

"Fine, I admit I enjoyed it. Are you happy now?" he sneered. He closed his eyes and took a calming breath. "Actually, I'm glad you brought this up."

Lucifer's triumphant grin faltered, and he furrowed his brow in confusion.

"You are really good in the sack," Pierce praised him, and a small, smug smile started to spread over his face. "You can give people the best night of their life without any further commitments. And this is what we are looking for: a thoughtful lover, for one night."

He deliberately emphasized the word 'one', as he leaned back in his chair and scrutinized Lucifer's face. The silence was heavy and neither of them seemed to be willing to break it.

Lucifer didn't know what to say. If Pierce did have any evil plan, he didn't feel like he was any closer to unravelling it. Simultaneously, he was trying to suppress another nagging thought, a terrible one: that there was no evil plan at all. That this was what the Detective really wanted.

Pierce could see that he cracked him. That he had given up and wasn't likely to ask any further questions. His plan wasn't jeopardized. But he had to make sure that Lucifer was still in. He stood up slowly again and cleared his throat.

"Chloe told me that you had agreed to this, but if you have second thoughts, you can back off. We can find someone else."

Someone else?

Lucifer's heart started thumping furiously in his chest. It was painful enough to see Pierce around her, but the thought that another man (or woman?) could become intimate with her was nearly unbearable.

"No," he said a little bit too hastily. "I'm still in."

He swallowed and averted his gaze, then started to retreat towards the door. The air had become really suffocating in this bloody office.

"We'll do the deed as soon as we solve this case," he said, and with that, he opened the door and left the office hurriedly.

A/N: As always, feel free to leave reviews. :)