''I'm telling you,she killed herself!'' Caitlin growled, running her hands through her curly,brown hair. It was around 12am now and she was getting tired and impatient, she needed her sleep.

''I just don't understand how you could come up with such a theory!'' Sherlock spat, waving his hands about frantically ''John, tell her!'' her cried, switching his gaze from Caitlin to him.

''I'm with Caitlin on this one, she has her own blood on her hands!'' John replied, rubbing his hands together knowing what strop Sherlock had to come next.

Sherlock grumbled at John for siding with Caitlin and leant back in to his chair, desperately searching each picture and piece of evidence for answers, his eyes scanning each inch so precisely you could almost see the cogs turning in his passed in silence when Sherlock jumped up and gasped ''I'VE GOT IT'' breaking the silence around them.

Caitlin and John's brows furrowed in unison looking on to Sherlock for answers, it was Caitlin who piped up first.

''Well detective, how?'' she drawled, sarcasm dripping off each word.

Sherlock's eyes lit up while a grin formed on his face ''I really can't see how you missed it, really, aren't you meant to be the smart one?'' .

Caitlin was about to retaliate but John got there first ''Sherlock, don't be a dick'' he scowled.

Caitlin smirked ''thank you John but i can defend myself, even from arrogant detectives'' bringing her gaze to Sherlock's who was staring at her intently and smirking, even though she just insulted him.

''So, smart ass, how did this woman die? come on Sherlock, amaze me'' she smirked.

''She was forced to kill herself'' Sherlock sat back down in his chair.

John laughed ''what? how? there is no way!''.

Caitlin's eyes widened ''wait, no Sherlock is right!'' she whispered snapping her gaze to Sherlock who was sat there looking a little too smug for her liking.

John's laughing subsided ''really?'' .

''How did I not see this? that knife wound by her chest is what killed her! how did I miss that!?'' Caitlin growled, pissed that Sherlock's ego was growing by the minute.

John's face fell ''but what about the one across her knock?''.

Sherlock sat up in his char ''see, this is where it gets interesting! that is a cover up, the killer done that once she was dead, he isn't obviously comfortable with getting his own hands dirty''.

''So we have a murderer that doesn't actually touch his own victims until they are dead?'' John questioned, growing more confused by the minute.

''Exactly'' Sherlock and Caitlin stated in unison, looking at each other, shocked.

Caitlin looked at her watch ''oh god, it's 1am''.

She pulled herself up off the sofa,stretching her limbs, ''I'm off now, got to be up early tomorrow'' she moaned.

''Why?'' John questioned, Lestrade wouldn't want her in until noon earliest.

''Gym, got to stay fit now haven't I?'' she smirked, walking towards the door.

Beep beep beep beep beep beep

''Ugh, 7am already..'' Caitlin groaned, dragging herself out of her bed.

10 minutes later and Caitlin was heading towards the local gym when she received a text, how strange, this early in the morning, she brought her Phone out from her pocket and swiped her finger across the screen, unlocking it to unveil Sherlock's number, she smiled.

It read ''still dark out be aware, next time be quiet when cursing you will wake the whole building -SH'' .

She bit the inside of her cheek silently cursing at herself, she had a little bit of a cursing problem and it seemed to be worse in the mornings, she thought for a little while before replying:

''Sorry, I'm not a morning person'' she hit send, still smiling at herself, in his own way that was Sherlock's way of saying be careful as well as telling her she has a big mouth.

Caitlin was lost in thought, the walk to the gym was around 10 minutes so she had a lot of time to think, she may of only known Sherlock and John not even a week but she finally was starting to feel a little happy again, after everything she went through she thought she deserved to be happy, the 3 of them had become good friends, John was like a brother yet Sherlock still made her feel confused, when he looked at her her breath would hitch, his touch would send shocks through her, he confused her and that never happened as her mind was her best tool, one minute she wanted to kill him yet in the next she would be drawn to him, well look at him! she thought, he was tall, smart, his eyes were beautiful and he had better cheekbones than her, he was handsome…

No! she couldn't think like that! they were her friends, and she had heard previously Sherlock doesn't date.. but she has seen the way he looks at her, even if it's for a split second, or was she seeing things?

Thank god that's over Caitlin thought to herself walking back out the gym, pulling her hoody back on as she headed back in the direction of Baker street.

She was about 5 minutes into the walk when she felt a presence behind her, not too close but close enough for her to feel someone was there, she quickened her pace not looking back.

''You can quicken your pace all you like, I'm still going to have a little talk with you, miss O'Neill'' a voice came from behind her, making her stop dead in her tracks.

Caitlin panicked, she spun around and threw her first forward, connecting it with the person's nose behind her.

Once she had regained control of herself she stepped back to see a man dressed in a suit, umbrella in one hand, he was a little taller than her, smug look on his face even though he was cupping his nose, Politician she thought.

Caitlin clenched her teeth, that wasn't going to be a pretty sight.

''Well, aren't you a fiery one'' the man growled, grabbing a handkerchief from his pocket and dabbed at the blood coming from his nose.

''What do you expect sneaking up on a woman?'' she spat.

''Not that, i ensure you'' he moaned.

''How do you know me and what do you want? I have a job to get to'' she pushed, getting rather irritated at the smug man.

''I have connections, and lets say… I'm a friend of Sherlock's shall we?'' he plastered a fake smile on his face.

''That doesn't answer my question and Sherlock doesn't have many friends so i don't believe your bullshit'' she growled.

''I'm here to offer you a job'' he rolled his eyes at the moody woman.

'' what?'' was all Caitlin could say, getting rather bored by the minute.

''I will pay you 2x what you are payed now to spy on Sherlock for me, as I know you are going to be spending a lot of time with him, and I know he has a soft spot for you''.

Caitlin laughed, not believing what she was hearing ''What?! no to the first and no to the second''!

Then it all clicked, the arrogance, the smugness, this man was Sherlock's brother, Mycroft was it?

''I'm not spying on your brother, Mycroft'' she smirked at the man's face.

''Well, they were right, you are smart, perhaps you are right for Sherlock'' he grinned.

She rolled her eyes and gritted her teeth '' If that will be all, then goodbye'' and she turned on her heel and walked off, arrogance must run in the family she thought.

•••••••••••••••••••••••••••••••••••••

''Sherlock! what is with your damn brother?!'' Caitlin growled storming into the apartment.

Sherlock looked up from where he was sat ''please, come in'' he said, rolling his eyes.

John walked over from the kitchen ''Mycroft?'' he questioned the angry woman.

''Yes, who knew arrogance ran in the family'' she growled, raising her arm to inspect the hand she punched him with, to which John spotted the bruised hand and ran over to her aid.

''What happened?!'' .

''Well Mycroft decided to sneak up on me, and let's just say he ended up with a very bloody nose'' she grinned, winking at Sherlock when she spotted his grin.

''Finally, did he ask you to spy on me?'' Sherlock questioned.

''How did you know?'' she questioned, wincing as John tended to her hand.

''He always does it, it's like a test, did you say yes?'' Sherlock eyed her intently, keeping his gaze away from her eyes.

''What? No i said No!'' she protested.

''Shame, we could of split the fee'' he shot her a sarcastic grin, which ended up from a fit of laughter from her and an eye roll from John.

''Well, i know it's early but we could get a head start to the station, Lestrade texted saying they think they have got some suspects'' John intervened, finishing on Caitlin's hand.

Caitlin's eyes lit up, ''great, lets go''.

Sorry it's not much today, I needed to get this chapter out the way, it was a pointless but needed chapter really.

review and rate please!