A/N: I don't own Sherlock or its characters. Enjoy :)

Two days later, Mari was sat in 221A, enjoying the quiet. Nobodt shooting walls because they're bored, nobody trying to offer her money to spy on Sherlock.

Mari turned up the TV slightly so she could hear the show that was playing as she got up to move into the kitchen.
Mari made her cup of tea and sat back down in her armchair in the living room, sipping her tea as she did.
Her thoughts (And potential quiet-ness for that matter) were broken when she heard a loud 'THUD' on her front door. She got up to answer, unaware and not really caring about who it could be on the other side of the door. The door flung open and it revealed her brother's face. Moriarty's face.

Mari made a move to slam the door back into his face, but Moriarty was too quick and shoved his foot in the door. He pushed his way into the flat and stood facing Mari for what seemed like hours.

Moriarty opened his mouth to speak, but shut it abruptly when Mari backed away.
"I'm not here to hurt you." Moriarty said. Mari paused before saying: "You've said that before."
Moriarty sighed and ran a hand through his hair. Mari copied his actions, but was looking away. "Why are you-?" Mari began to say, but Moriarty cut across her. "Come home." He said, a hint of pleading in his words. "Please just come home." He repeated. Mari turned to face him. 'Moriarty, pleading?' She thought. 'I never thought I'd see the day.' She finished, smirking inwardly, but quickly recollected herself.
She looked at her brother with soft eyes. "No." She said, shaking her head. "No." She repeated. Moriarty looked crushed, but it was soon replaced with anger. "Why?!" He shouted "Why not?!" He questioned. "I just- no, I can't." Mari said. "Can't." Mari repeated. "Just come home!" Moriarty shouted. "No!" Mari shouted back. She wondered if Sherlock and John could hear her arguing.

Moriarty strode over to his sister, attempting to pull her home whether she wanted to go or not, but she squirmed out of his grasp.
The next few things to happen were a blur to both the brother and the sister.

Moriarty snapped, pulling his gun from the inside of his jacket and aimed, shot and missed his sister- unlike the last time. He then ran, the last words his sister had shouted echoing around in his mind, he knew they would haunt him forever. "This is why I don't trust you!" She had said. He knew she had meant it, too.
Mari slid down the wall and onto the floor- the front door wide open as well as her mouth, as if in a silent scream. "This is why I don't trust you!" She had said. She had meant it, too.

"Mari?" She heard John calling. When she didn't answer his voice became more alarmed. "Mari?!" He repeated, running into the open flat.
Mari propped, and eventually got herself up with John's help. She hugged him quickly, saying: "Thank you. Again." "You seem to have a knack for appearing at the right time." She finished.

"We would've been here sooner, but we were looking at a case." John explained. "Oh?" Mari piped up. "Can I help? Like a repayment. Sort of." She said. "Yes, okay, an extra person on the case could be good." Sherlock said; Mari smiled inwardly. "Mind you, Mycroft will be there." Sherlock finished. Mari hushed a laugh at before when she met Mycroft and said: "That's fine, don't worry." "I might," Sherlock murmured, half-glad no one had heard.

"You okay, though?" John asked, looking fairly worried. "I'm fine, I'm okay, I am." Mari answered, convincing herself and John.
"So...What's the case?" Mari asked. "Sixteen-year-old boy found dead in a car park. His name is Joesph Sherwood, his father is James Sherwood; A member of Parliament. Joesph was strangled be a rope as you can tell from the rope burn around his neck and he was found clutching a USB port." Sherlock explained quickly.

"Do stop showing off, Sherlock. We all know you're attracted to Mari." Mycroft smirked, making John choke on air with his comment.
"I am not showing off, I'm simply explaining the case." Sherlock snapped. "If you say so, but, do remember to return the USB to Mr. Sherwood once you have finished examining it." Mycroft said, noting that Sherlock didn't deny that he was attracted to Mari.

"There will be no case if I can't get into the files on that USB." Sherlock pointed out. "You fully know that it is not my place to say about those. I expect to be informed on any developments. Goodbye." Mycroft said, letting himself out.
"I could try getting into those files for you, maybe?" Mari offered. "You can try, but I doubt you'd be able to get into them." Sherlock doubted, but still held the door open for 221B so Mari could access the computer.
Mari came in and took a seat. She immediately began typing away on the the laptop. "I'm in." She announced proudly. "What, how!?" Sherlock half-shouted. "My brother is an international criminal." She pointed out.

"It's got government secrets, not just here, but all over the world. Even launch codes from North Korea." Sherlock mumbled, not realizing he had leant his hand onto of Mari's. Once Sherlock had noticed, he sharply pulled his hand away. Mari looked confused and an awkward silence fell which was (fortunately) broken by John. "Just got another text from Lestrade; Another murder."

A/N: Was it good? Reviews and criticism are much appreciated! :)