"Your girlfriend is looking a little on edge today," a new voice joined Sherlock as he sat by himself in the lab of St Bart's. Sherlock's eyes never left the microscope where he was examining some form of chemical on a new case which had developed.

"Is she really?" Sherlock drawled, knowing Irene Adler was beside him, wanting to provoke a reaction from him. But he had a plan.

"Hmm," Irene agreed, settling down on a stool next to Sherlock's, her arm draped over the worktop and her hand holding her chin. "I guess you told her what Mr Moriarty has planned?"

"Of course," Sherlock kept his answers short and sweet.

"And how did she take the news?" Adler wondered.

"Oh she was filled with joy," Sherlock said sarcastically with a roll of his eyes into the microscope.

"Guessing it didn't go down too well then," Irene commented and then whistled lowly to herself.

"No," Sherlock agreed. "Why are you here?"

"I have information...Mr Moriarty is getting better...slow but sure..." Irene chuckled.

"Where is he?" Sherlock asked her.

"He's..." she began but trailed off, raising a finger and a small smile crept onto her mouth, "good try Mr Holmes...but I don't plan to spill any news about it."

"Then I have nothing to say to you," Sherlock said as the computer suddenly made a loud beeping noise and he jumped from his seat, walking over to it and checking the results. He shook his head once as it said there was no match and he took the Petri dish from the microscope and placed it back into the large fridge.

"Don't be such a bore Sherlock," Irene pouted. "I have a proposition."

"Somehow I don't think I'm interested," Sherlock said, avoiding her eye contact as he dashed around the lab.

"I think you will be," she informed him. "Because little Scarlett is involved."

Three hours earlier

"Mary!" Scarlett called out from the photocopying machine. "Can you send the documents on my computer to print please?"

"Come back in here and do it yourself!" Mary yelled back, sitting comfortably at her desk. Scarlett walked back out into the office area and did it herself.

"I said please," Scarlett hissed at Mary before walking back into the copying room, picking up the documents and then dropping them off into Mr High's office.

"There's someone outside to see you," Mary informed Scarlett when the girl finally managed to sit back down at her desk, typing quickly as she glanced out the glass and saw a woman at the main reception who was stood and texting on a phone.

"Her?" Scarlett asked and Mary nodded.

"Apparently so," she said. "Mr Willis permitted you to go on your dinner break now and sort this out."

Scarlett stood up and grabbed her coat, shrugging into it, looking onto the December air through the window.

"Don't be late!" Mary called to her as Scarlett walked through the office, dumping her bag onto her shoulder as she did so. When she stepped into the reception she looked at the woman with wide green eyes and long brown hair as they eyed each other up.

"Miss Jenson," she spoke.

"Miss Adler, I presume?" Scarlett said and the woman nodded.

"We need to talk," Irene said and began walking to the lift, leaving Scarlett with no option but to follow her. Once inside the confined space, Irene turned to look at Scarlett.

"You know that Moriarty is back," Irene stated. "And you should also know that he wants you and Sherlock dead."

"I am aware of that," Scarlett replied. "What does it have to do with you?"

"I'm just his messenger...much like you...a secretary if you shall," she stated and hit the red button on the lift, stopping it from moving.

"I don't think you and I have anything in common," Scarlett replied. "Now, what do you want?"

"I have been instructed to deliver this," she handed Scarlett a brown envelope which she pulled from her coat. Scarlett looked at the envelope before pulling it open. It simply read 12 Primrose Avenue.

"What's this?" Scarlett asked.

"An address," Irene rolled her eyes. "How are you with Sherlock when you ask such ridiculous questions?"

Scarlett had no reply to that for she didn't really know the answer.

"Anyway," Irene continued, "he wants you there as soon as possible."

Irene pressed the button for the lift and then it continued travelling downwards.

"Why?" Scarlett asked.

"Obviously to finish you off," Irene said and then stepped out the lift. The two women walked down the steps quickly and waited for a cab.

"And I imagine Sherlock isn't to know of this?" Scarlett asked and Irene remained tight lipped.

"Not as dumb as you look," she said and hailed a cab, making sure Scarlett went in first before she followed and gave her an address.

"You know I could just scream?" Scarlett whispered. "I don't know why I'm coming with you willingly."

"Because deep down you know it is the sensible thing to do," Irene said. "Trust me."

"I'm sorry," Scarlett simply said. "Did you just tell me to trust you?"

"You'll see," Irene said lowly and turned to look out the window, leaving Scarlett to daze into her own thoughts, pondering whether or not she should alert Sherlock of what was happening. She knew she should...but then he may get hurt once again. And Irene would clearly see. And then her thoughts went onto how she could escape Adler's gaze. Did she really want to see Moriarty? No. She didn't.

"Thanks," Irene said and the women moved from the cab and looked onto the house.

"I'm not allowed to go in," she said and then went into her pocket and pulled out a small black object and Scarlett looked into her eyes intently.

"What is this?" she asked as Irene handed her the object.

"Like I said," Irene spoke. "You should trust me...but I'd keep an eye on Sherlock...he's certainly a dish."

And with that, Irene Adler left Scarlett holding onto the gun in broad daylight. Scarlett hid it in her pocket and then waistband and then moved up the pathway, knowing she was once again better dead than Sherlock. She could also feel Irene Adler still looking at her from down the street, making sure she went into the house. Scarlett had seen the gun hidden in Irene's pocket along with the one she had given away and so she guessed if she tried any funny business then she'd probably be dead anyway. The door was unlocked and Scarlett moved into the derelict house, her hands shaking as she did so, wondering what to do for the best. Why had Irene Adler given her a gun? What was she playing at? Scarlett moved further into the house until she came to the living room. And he was there. The usual grin was held on his face as he looked at the cautious blonde walking into the house. He was pale and his hair was ruffled up, yet he wore a smart suit. He was sat down and looked incredibly weak.

"Miss Jenson," he said slowly and Scarlett noted the gun on his lap. They were alone in the house and everything was white and furniture was covered up.

"Why am I here?" Scarlett asked, suddenly reaching for the gun in her waistband and pointing it at Moriarty, not taking any chances whatsoever.

"I didn't know you carried weapons with you these days..." Moriarty said and picked up his own gun weakly.

"How did you survive?" Scarlett asked. "I mean really?"

"I only just made it," Moriarty said. "But I'm still here."

"I can see that," Scarlett said. "But...well...I...I'll call the police."

"And as soon as you do that then I will shoot you," he warned her, his eyes narrowing into hers.

"So what?" Scarlett asked. "Why am I here?"

"To finish what I started weeks ago," he said.

"And what makes you think I won't shoot you before you shoot me?" Scarlett asked him. "After all you put us through...do you think I won't do it?"

"You don't have the guts," he informed her. "What you did was brave before...shooting yourself to save Sherlock...but we both know that you can't kill anyone if they're weak...you'd consider it to be taking advantage."

"I killed the Golem," she informed him.

"But he had Sherlock's life in the line," Moriarty whispered. "This is just you and I...only your own life at risk...you don't have the stomach."

"You're wrong," Scarlett said and took the gun off from safety mode.

"You're shaking," Moriarty chuckled. "You can't do it Scarlett..."

"Don't test me," Scarlett snapped, beginning to pale and sweat slightly. "You almost ruined my life!"

"And you're telling me you want cold blooded revenge? Like Sherlock would?" Moriarty checked.

"No," Scarlett shook her head. "I want you to leave me alone." And then she shot him.

...

"Scarlett..." Sherlock said as soon as he entered the house and saw Scarlett sat on the floor, a gun held in her hand, her eyes looking at the bleeding body of Moriarty.

"You killed him?" Sherlock checked as he dropped to his knees and took the gun from her hands, stuffing it into his own pocket as he helped pick her up from the floor.

"Are you okay?" Sherlock asked her and she nodded. She wasn't showing any emotion whatsoever. She was vacant.

"I just shot him..." Scarlett said. "I had to."

"I know," Sherlock assured her. "But we have to get you out of here...we need to cover it up...come on..."

"What?" Scarlett asked Sherlock.

"The chances of you going to jail are slim Scarlett...but we should avoid the chance anyhow..." Sherlock said and wrapped an arm around her waist, moving her from the house as she allowed him to steer her onto the street.

"Irene," she suddenly said, looking up at Sherlock. "She gave me the gun Sherlock..."

"I know," Sherlock said. "I'll explain everything..."

...

"He's dead," Irene simply stated as she spoke down the phone. She watched as Sherlock helped Scarlett into a cab and they drove off whilst she backed away from the road and looked at the couple.

"Good," the male said from the other end of the phone. "Call the police in five minutes. Tell them you heard a gunshot as you were walking down the street and so you went to investigate. Say nothing more and nothing less."

"Yes sir," Irene said. "And as for Mr Holmes?"

"Leave him be," the man said. "He's not my main worry anymore. My main worry had been disposed of."

"Why did the girl have to be involved?" Irene wondered. "Why not hire an assassin?"

"There would always be a chance they could be found out and that would not reflect well on the government if so," he spoke. "This way it is an open and shut murder enquiry. No need to drag anything out...and Moriarty won't be able to cause me anymore problems with his drug rings and sneaking past borders with smuggled goods."

"And does that mean my contract is terminated?"

"As a double agent, yes." He said. "But I could always do with your services in my office."

"I'll think about that," Irene said.

"You do that," he replied. "Now call the police," and with that, Mycroft Holmes hung up the phone.

...

Scarlett continued to check the news often; making sure nothing came of Moriarty's murder. Sherlock had been able to deduce that Irene was a double agent, fighting against Moriarty and she wanted him dead as much as Sherlock and Scarlett. But, he couldn't quite figure out who she was truly working for. He had managed to dispose of the murder weapon successfully and now they were all trying to get on with their lives.

"Oh," Scarlett jumped when she walked in with the shopping and saw John in the kitchen making a cup of tea. "I thought you'd be at Sarah's."

"No," John said. "She's out with some friends tonight...and Sherlock told me...about you and Moriarty..."

"Hmm," Scarlett said and she placed the bags onto the worktops. "It feels like a weight has been lifted from my shoulders." She wanted to add that another one may be added on but she refrained from saying anything. Twenty one days had passed and she was preparing to find out if she was pregnant or not.

"I imagine so," John said and Scarlett began to unpack the shopping.

"So are you okay?" John checked with her and she nodded.

"I'm fine," she said. "Just tired and all that..."

"I'll help unpack then," John said and reached for the bag. Scarlett saw him and she rushed across the kitchen and tried to pull the bag from his hands.

"I've got it!" she snapped at him.

"Its fine," he promised her, not letting the bag go.

"No!" she snapped and then the bag split. Scarlett groaned and dropped to her knees and John did the same. Scarlett saw the green pharmacy bag but before she could grab it, she saw John with it. The contents inside it fell to the floor and Scarlett simply just looked down onto it as John did the same.

"You're..." John stammered as he picked it up and held onto it.

"I don't know," Scarlett shrugged. "I...I need to check."

"Stand up," John instructed her as he placed the pregnancy test back into the bag and helped Scarlett up. "You look like you're about to pass out."

John and Scarlett moved over to the sofa and sat down, Scarlett dropped her hands into her head and John waited expectantly.

"I...I didn't...I didn't know what to do," Scarlett said lowly. "Sherlock...things got heated...and I told him...that we'd be safe...because I'm on the pill...but the next morning...work phoned me and said I had to go in early...I forgot to take the pills John...I missed taking them the next day...then I went to find them and I didn't have any..."

"You had unprotected sex?" John checked. "With Sherlock?"

"Yes," she replied. "So I've had to wait twenty one days before being able to do the test."

"Does he know?" John whispered. "That there's a chance you could be pregnant?"

"Of course not," Scarlett replied quickly. "If he did...what will he do John?"

"I don't know," John whispered. "I truly have no idea."

...

So that is Moriarty now truly gone and Irene Adler was also slightly sneaky too! But now, we may have a dilemma! So, cast your verdict! Pregnant or not? You choice! Please review!