A/N: Sorry it's taken so long! Life got a little bit in the way, but hopefully I'll find more time to write. Probably doesn't help that there are 4 versions of this chapter, but this is the one I'm finally happy with.

WARNING: Sexy times for two thirds of this chapter before a particular... issue becomes Plotty. I apologise, the Clowns couldn't hold back any longer.

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Chapter 6 – Little Switch

Harleen walked confidently through the asylum corridors, she noticed a few strange looks thrown her way by the other doctors, but she dismissed them. They were only jealous of her patient and her results with him. What they didn't know didn't hurt, right? She smirked to herself and grabbed two cups of coffee and a bar of chocolate from a vending machine before she finally reached her room. She saw the guards stood outside and waved them away before she stepped inside.

"Dr Quinzel, how nice it is for you to finally turn up," the Joker purred from his secured location on the other side of the table.

"Sorry, Mistah J, I thought you'd like coffee," Harleen said apologetically. She put the coffee on the table with the chocolate bar and then looked to him.

"Come on, doctor, take this ridiculous thing off me," Joker said with a huff and Harleen scrambled to remove the strait jacket. She felt her hands shake a little as she fumbled with the material. She watched as he stretched his arms and she folded the jacket and placed it on the top of one of the metal cabinets. She felt his breath on her neck and she bit her lip. Two large hands came to press against the front of the metal drawers either side of her head.

A shiver ran down her spine and her mouth ran dry. She bit her lip and closed her eyes as she felt a little heat from his body being so close behind her. He pressed his chest against her back and he rubbed his cheek against the side of her face.

"You always smell good enough to eat," Joker growled. Harleen felt her heart thump rapidly in her chest and she turned round in his arms. He didn't even blink, he didn't move when she faced him. He was the epitome of control, ironically, even though he thrived in chaos, his control over himself was amazing. He pressed closer and she felt her back press against the cabinets.

"Jay…"

"Oh doctor, doctor, doctor," Joker groaned. "What have you let yourself in for?"

"Joker-"

"Mr J, please, it sounds so much… nicer coming from your mouth."

"Mistah J, we can't-we've taken too many risks already," Harleen whispered. "We're going to get caught." He pushed his body against hers and she stopped breathing. His face lowered towards hers and he only stopped when his mouth just brushed against hers, Harleen leaned forwards to try and kiss him, but he moved away again.

"Oh honey, nothing's that easy," Joker chuckled. "We've been playing this game for far too long, Dr Quinzel. We have precisely 42 minutes and 32 seconds before the guards come to escort you back to your safe little office and rush me back to my cold cell. At least give me something good to hold onto."

"I can't-"

"Hush, princess," he smirked. Harleen stared up at him, her face a mix of total adoration and fear. Oh god he shouldn't be feeling anything for her apart from hatred, but he wanted to do awful things to her. He lowered his lips and he kissed her hard. She whimpered into his mouth and her hands knotted into his hair. He wrapped his arms around her and pulled her from the cabinet. He put her into the corner of the wall and fiercely took possession of her mouth.

"Mistah J, stop, I can't, I mean, I haven't-" she cut herself off and flushed a deeper red. She hated the admission she was about to make, but it seemed he'd gotten there already.

"Oh, this is too good," he grinned. "What a rare and perfect little demon you are, Harley Quinn." His pale tattooed hands crept across her body and tugged her blouse from her skirt. His fingers made quick work of the buttons and then slid up from her naval to her breasts. He squeezed them through the material of her bra and couldn't help the growl that came from his throat as she moaned gently. He pulled her hair to the side to expose her neck and he sucked at her pulse point before he bit into her skin, not enough to break her skin, but it would leave a beautiful purple bruised love bite.

Harleen felt a million things at once, she was repulsed by herself, but so entirely consumed in the man that was touching her that she couldn't concentrate. She had doubted her sanity on more than one occasion since she'd picked up the Joker's file, but she really had thrown herself to the wolves with this further step. She felt his hands slid up under her skirt and his fingers traced the tops of her stockings, before they travelled further north. She stopped breathing when he reached her hot and damp core and she had to force herself to breathe.

The Joker wasted little time in finding out exactly how to touch his little pathetic doctor to make her loud and how he could make her moan. But soon enough he'd had enough of this and he needed more. It had been a long time since Arkham had afforded him female company and gracing him the gift of this perfect specimen of female form had been a bit of a complication. He had needs, yes, but he normally kept them so under control that he noticed immediately when his mind and body wouldn't let go of the good doctor. He dragged her panties down her legs, tossed them to the side and move to be directly at her entrance. He saw the fear in her eyes and it broke his resolve and he pushed inside of her.

Harley woke with a start and sat bolt upright in her bed. She looked around at her room and noticed that she'd tangled herself around her duvet and blankets (Courtesy of poor old Quincy Sharpe under the Joker's orders) and her hand was between her legs. She jumped a little and whimpered at the ache at the top of her thighs. She pulled her hand away and growled at herself, this was becoming a little too common for her liking and she wasn't happy about it. Since the Joker had visited her in the gardens, he'd been strangely distant and hadn't visited her at night. He'd spent a lot of time pacing his cell and talking to a few of their henchmen. He barely looked at her and sneered in disgust when Samantha came to take her for a session.

She pulled her duvet straight and wriggled back underneath it. She closed her eyes, but knew she wasn't about to sleep again. Harley ran her hands over her bump and she imagined that she could feel the kicks of her baby, but knew it was too early for that. Though time did seem to be rushing away. She felt like she was being watched and she looked round to see the Joker staring at her from the doorway of her cell.

"Puddin'?" Harley asked quietly.

"What were you dreaming about?" Joker purred.

Oh god, Harley thought and that throbbing returned.

"Just… us, Mistah J," Harley stammered. Her body betrayed her as even more moisture gathered between her legs and her nipples pebbled and hardened against her best wishes. She didn't want him to know how much she wanted him, she didn't want to give him the satisfaction. It had been bad enough when she'd been pregnant with the twins, she'd barely been able to leave him alone. Not that he'd really complained, but the day she'd gone into the second trimester, she'd been horny as a bitch in heat.

Apparently this time was no different.

Great.

"Just us?" Joker hummed. "Didn't look like just us from where I was watching."

"Puddin-"

"What were we doing then, pumpkin? Plotting the demise of the Bat?" Joker smirked as he very slowly walked forwards. "Playing with the Hyenas? Crushing someone's skull?"

"N-no," Harley mumbled.

"Or was it something altogether much more… primal and interesting?" he was now stood at the foot of her bed and it was then she realised that he was shirtless in the low night lighting of the asylum.

"Come on, princess, tell daddy exactly what was going on in that sordid little mind of yours," Joker said slowly and he pulled the duvet down from her body. His eyes stayed locked on hers as her night clothes were revealed to him.

"Puddin', I was… dreamin' of our… of my first time," Harley admitted. It definitely wasn't in her best interest to lie. He made a strange noise that was half a growl and half a moan as he rolled his head and stretched the tendons in his neck. His jaw rolled open and he looked down at her like she was some kind of buffet, waiting to be devoured.

Well… damn.

"Oh Harley, Harley, Harley, that was when you were just a dream," Joker chuckled and he moved to crawl over her. He moved between her legs and felt the heat from her core against his groin. "Oh that was so much fun." His hand snaked beneath her pants waistband and his fingers found her sodden core. She whimpered and pushed to meet his hand as he pressed two fingers inside of her. She saw him raise a bare brow and she giggled at him. He grit his teeth at her giggle and his free hand slapped her ass hard. She bit her lip as she tried not to moan.

"The pain on your face."

Oh just get on with it! Harley begged in her head.

"Your sick little begs for more whilst trying to make me stop at the same time."

This isn't even funny anymore.

Joker managed to rid them both of their pants and in one smooth thrust he was deep inside of her. He thrust in and out of her as hard as he dared and Harley struggled to keep quiet as her body burned like she was in hell. Her head fell back against the bed and she wrapped her legs around his hips, trying to pull him in as deep as she could take. It was an annoyingly slow build up and Harley felt like she was lost by the time she fell over the edge.

But then the strangest feeling took over Harley. It felt like she was floating in nothingness, just drifting in space and as she tried to come to grips with it, she could hear someone talking. Was it her? No, that wasn't her accent, wait that was the Joker's voice, what the hell was going on.

"Puddin'?" Harley mumbled.

"Shut up, Harley," a formal doctor's voice snapped back.

"Aww, my little doctor came out to play," the Joker purred.

"No, I'm doing the right thing and protecting my baby," the voice said again.

"My baby, I think you mean, Harleen," Joker smirked. He leaned down and he kissed Harleen's mouth and neck. She couldn't help herself, it had been so long since she'd been in control and god it felt good to touch him again. She shouldn't, she should call the guards and get Drake down here.

"He will never be your baby, Joker," Harleen almost spat.

"Get outta the way, Harleen!" Harley screeched inside her head.

"Oh if you weren't pregnant, I would beat that sass out of you," Joker chuckled. "And I'd enjoy every minute of it. You were always a pain in my ass."

"This isn't about me!" Harleen told him. "It's about the baby, this is no life for a child. It's no place for a family. A family shouldn't be made of murderers anyway, let alone having a baby born into Arkham asylum. None of this is fair, Joker."

"No, no, I'll tell you what isn't fair, Harleen," Joker sneered. "That some jumped up intern decided to play cat and mouse with the man who made the game. Some stupid little girl thought she was clever enough to take on the man that keeps the Batman on his toes. To top it all off, she had her fun and then she signed me off to have my brain electrocuted into a crisp. Then when she did the stupidest of stupid things and brought me my exit route, she thought I'd kill her and when I didn't, she thought she could throw herself at me."

"I loved you!" Harleen protested loudly.

"And you thought I could possibly love such a useless creature as you?" Joker laughed. He stroked the side of her face and then put his hand over her bump. "Nothing's changed between you and me, Harleen. I think it's time you finally left Harley alone."

"The only one hurting Harley is you, why don't you just die?" Harleen challenged and tried to wrestle free of his grasp. She was finally in control of her body, she wanted to be out of his reach despite the fact she knew she still loved him. The poison was too much, it was too toxic to her baby, and it wasn't fair. She felt his hands on the side of her face and she tried to punch his chest, he didn't even notice her strikes.

"Harley, come on baby, you can beat this bitch down," Joker said calmly.

"I'm tryin', puddin'," Harley shouted.

"I can see you, princess, I can see you in there," he continued, ignoring Harleen trying to struggle free. "Come on, you can put her back in her box. Harley, damn it, do it now!"

"Go to hell," Harleen growled. "She's never coming back, that's it, play times over."

"I know as well as you do, Doctor, that it's not like that," Joker chuckled. He was right, Harley was strong and with their shared knowledge, they fought tirelessly. Harleen had never quite stopped trying to get forward, but during Harley's most destructive moments, Harleen had to admit to closing her eyes to the outside world and trying to pretend it didn't happen.

"It can be," Harleen said lowly. "Dr Drake's going to help me make sure that Harley stays hidden."

"You're just a naïve, pathetic waste of brain cells, Harleen," Joker said angrily. He put his hand around her throat and watched as Harleen's face contorted in fear, he was in control, not her. His other hand stroked over her bump and she grabbed his wrist there.

"Don't hurt her," Harleen gasped.

"I wouldn't hurt her," Joker laughed. It sent Harleen's blood cold and she tried to push his hands away from her. "Oh, you're not in charge here, doctor, you're a patient like me."

"I'm not like you," Harleen whimpered.

"Yes you are," the clown grinned. "You're more like me than you ever realised. You're just like me, just a few steps behind, sweetheart. I thought I'd finished with you, maybe I haven't. There's people you care about, Harleen, I haven't forgotten."

"I have no one left except my baby," Harleen snarled.

"There's a truth," Joker smirked. "I'm going to enjoy watching Harley crush you."

"There's one thing that Harley will never understand," Harleen whispered. "She will never understand that you do not love her. She will never see the abuse you put her through. She takes your punches and turns them into love. The day she's had enough, when you've landed one punch too many, you will find me in control and taking my baby with me as I disappear from your life. Harley cannot keep this life up, she's strong but you will be her undoing. I will at least be there to pick up the pieces."

Joker growled furiously and he raised his hand back to strike her before her eyes went glassy and she looked vacant. For a few minutes, Harley's body didn't move, she didn't respond and just as he started getting a sight miniscule amount of concern growing in his mind, she finally looked into his eyes.

"Puddin'?" Harley asked in confusion.

He pulled his hand down but he was furious with her. He had told her to keep Harleen controlled and she had failed. He knew how hard it was controlling voices, but this was more than just a voice. It was a personality and he didn't care what Harley had to do to stay in control. Without the baby, he would've hooked her up to another ECT machine and fried her last brain cell, but with the baby… he wasn't sure how far he could push his usual techniques, he didn't want his heir damaged due to its mother's stupidity. Joker pushed himself up off the bed and walked away from Harley, he sorted out his sweat pants and stroked his hand through his hair to put it back in place.

"What the fuck was that, Harls?" Joker snarled as he faced the opposite wall.

"She came out of nowhere, puddin', I didn't-"

"You didn't try hard enough!" he snapped and turned back to face her. He moved slowly, his eyes didn't leave hers and it made her shiver. "You let her through and I kill you. Pregnant or not, Harley, I kill you."

"But-"

"No, no buts, no begging, no pleading," Joker growled.

"What does she know that's spooked ya so much?" Harley asked quietly. She sat up and pulled up her shorts and straightened her shirt as she twisted round to dangle her legs over the edge of the bed. She stroked her bump over her clothes and she tried to focus on that than the Joker's obvious anger.

"Nothing, she doesn't know anything," Joker growled and he walked towards her. "You keep that snide little bitch down."

"I'm trying, Mistah J, I am. She took me by surprise," Harley answered honestly. "I didn't… I didn't have time to try and block her in. I was a bit… busy."

"She's taken a shine to that awful doctor of yours," Joker said. "Forget what I said before. Tear her apart, princess. Tear her apart by any means necessary and destroy both Samantha Drake and Harleen Quinzel for once and for all."

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A/N: Please drop me a review guys, I don't really know if it's worth carrying this one on. I'm grateful for every single review, favourite and follow but I really cannot tell how you guys think or feel about this story unless you let me know. Plus they make me write faster and that means faster updates.

If I don't get to post anything before Christmas day, I hope everyone has a lovely Christmas holidays (whether you celebrate Christmas or any other religious festival) Hope Santa is very good to you all :)