The following morning Lyanna was awoken by the sounds of whispered giggles. She opened her eyes slowly and blinked a few time to let her eyes become adjusted to light. It was then that she saw what the two voices were giggling at. Her and Sherlock had both fallen asleep on the sofa; Lyanna at one end and Sherlock at the other. Lyanna's laptop was perched on her stomach, while Sherlock seemed to holding his violin to his chest.

'They look like a pair of bookends' whispered a very familiar voice.

'They look so innocent when they are sleeping' the other voice pitched in.

'Shame they are both psychopaths' snickered the first voice.

'Sociopaths' interrupted Lyanna.

The whispered voices stopped and Lyanna turned herself round and saw John and Mary standing by the kitchen.

'Of course' said John with a smile.

'How are you feeling Lyanna?' questioned Mary.

'Fine' replied Lyanna, bluntly.

'Well, when you get a minute wake Sherlock up' John's voice piped up from the kitchen 'I've got a bone to pick with you two'

Lyanna rolled her eyes and proceeded to prod Sherlock, quite firmly, in the leg. Sherlock simply groaned slightly and adjusted his positioned. With that, Lyanna shifted her leg slightly and progressed onto kicking Sherlock off the sofa. Sherlock landed with a thud, before leaping up into the air with a look of alarm across his face. Mary couldn't help but laugh.

'Morning' said Lyanna

'Huh?' replied Sherlock.

Lyanna then ignored Sherlock and turned to John, who had left the kitchen to find out what all the commotion was about.

'So, about this bone picking' she said.

John just shook his head.

'Next time, try to be a little less conspicuous when spying on someone' he replied.

'Of course John, what was I thinking?' Lyanna smiled.

'Anyway' interrupted Mary 'We are here because we needed to make sure you two were up'

'Why?' inquired Sherlock, who had now stopped looking around the flat aimlessly and had finally realised what was going on.

'I have invited a couple of people over to the flat, to celebrate the engagement' answered John.

'You only got engaged last night' Lyanna said.

'Well, you know, good news travels fast' Mary replied with a smile.

'Apparently so' Lyanna raised her eyebrows.

'So, now that you are up to date; if you wouldn't mind getting dressed, it would be greatly appreciated' John smirked.

'Fine' replied Sherlock and Lyanna, as they left the living room to get ready.

While the pair of them were getting ready, John and Mary relaxed on the sofa together; listening the snippets of conversation between Lyanna and Sherlock.

'Sherlock, have you seen my white top?' they heard Lyanna shout.

'No' came Sherlock's reply.

'Well, that is very helpful' said Lyanna, sarcastically.

Mary and John laughed lightly.

'Well, I cannot find it' they heard Lyanna groan.

'Here' they heard Sherlock shout.

'Oh good, he has found it' smiled Mary.

'That is not mine' Lyanna shouted.

'Obviously' replied Sherlock 'But you need something to wear, so there you are'

'Oh' was Lyanna's reply.

Silence then filled the flat. John chuckled slightly.

'Thank you' came the small voice of Lyanna.

'You two alright?' John yelled

'Of course we are, why wouldn't we be?' inquired Sherlock, as he strode into the living room.

'We were only checking Sherlock' replied Mary.

'Checking on what?' Lyanna asked, as she walked into the room.

'Well you see –' John began as he turned to face Lyanna, but he stopped as he took in her outfit.

Lyanna was wearing her black converse, and with them she was wearing a black skater skirt. However, instead of her white top; Sherlock had given her his purple shirt. It was the favourite shirt of all the women; otherwise known as 'The Purple Shirt of Sex'. The funny thing was; it suited Lyanna, a lot.

'Nice shirt' John smirked.

'Oh shut up' replied Lyanna.

Sherlock smiled slightly. Just then, Mrs Hudson came through the door.

'Good morning' she chirped.

'Morning Mrs Hudson' Mary smiled.

Before Mrs Hudson could continue, someone knocked at the door.

'I shall get it' Lyanna said, as she jumped up off the sofa and went and answered the door.

She opened the door, and there stood Lestrade with a bottle champagne in his hand.

'Oh hi' said Lestrade 'I don't believe we have met before'

'Unfortunately not' smiled Lyanna, as she opened the door wide and held out her hand. 'My name is Lyanna, I am the new assistant of Sherlock and John'

'So I have heard' smiled Lestrade, as he shook Lyanna's hand.

'Please, come in' invited Lyanna, as she stood to the side to let Lestrade in 'They are upstairs'

'Thanks' replied Lestrade, as ascended the stairs.

Lyanna smiled before shutting the door, and following Lestrade up the stairs.

'Who else are we expecting?' Lyanna inquired, once she re-entered the living room.

'Only Molly' replied John with a smile, as he handed Lyanna a glass of champagne.

'Thank you' smiled Lyanna, as she took the glass from John 'Wait a minute, THE Molly Hooper?'

'Yup' replied John 'Why?'

'Oh, no reason' mumbled Lyanna, as she took a sip from her glass.

Lyanna sat down on the arm of John's chair, as conversation picked up between; Lestrade, John, Mary and Mrs Hudson.

'Oh, I'm really pleased, Mary' said Mrs Hudson 'Have you set a date?'

'Er, well we thought May' replied Mary.

'Oh! Spring wedding!' cried Mrs Hudson.

'Well I can't wait' Lestrade smiled.

Sherlock suddenly stood up from his chair and walked over to the window.

'You will be there, Sherlock?' questioned Mary.

'Weddings – not really my thing' replied Sherlock with a wink.

Mary smiled. Just then someone knocked on the door.

'Ah, that'll be Molly' said Lestrade, as he got up and went to open the door.

Lyanna shifted slightly in her seat.

'I know you are bored Lyanna' said Sherlock.

John looked over at her.

'Why don't you think of something to do?' suggested John.

'Well…' Lyanna began 'You guys would not mind if I, say had a joke with Molly, an experiment if you will; would you?'

'You are going to mess with her head, aren't you?' inquired Mary.

'Maybe' replied Lyanna.

'Well I don't see a problem with it' Sherlock intervened.

'Well it is nothing Sherlock hasn't done before, but take it easy' replied John.

'Oh come on John' smiled Lyanna 'We both know I am unable of taking it easy'

'I was afraid you were going to say that' John chuckled.

Just then, Lestrade strode back into the room, with a Miss Molly Hooper behind him.

'Hello everyone' Molly piped up.

'Hi' they all replied.

Molly smiled until she looked over at Sherlock and noticed that an attractive young woman, a stranger to Molly, was standing very close to Sherlock. Not to mention that this strange girl was wearing Sherlock's shirt; and the purple one at that. Molly didn't even want to think about what event had meant that this very pretty young woman had wound up wearing Sherlock's shirt. Molly's smile faded and instead, her expression turned into one of anger and frustration. Lyanna noticed this, and decided now was the best time to start 'messing up' Molly's head. Lyanna knew that she shouldn't, but she had heard a lot about Molly and how easily fooled she could be; that Lyanna couldn't help herself.

'Hello' Lyanna smiled as innocently as possible, while taking a small step towards Sherlock.

'She's a bit young for you, don't you think Sherlock?' Molly spat out.

'I'm sorry?' questioned Sherlock.

The other conversations faded out, until all eyes were on Molly, Lyanna and Sherlock.

'She can't be any older than 17' Molly cried.

'Um, actually' Lyanna interrupted 'I think you will find that I am 18'

'Oh so that makes it alright then' Molly replied sarcastically.

'Good, I am glad you agree' Lyanna grinned.

Lestrade snickered, while John tried his best to hold back a smile.

'Would anyone care to explain what is going on?' Sherlock questioned the room.

Nobody replied, instead Lestrade looked away to try and hide a laugh.

'I cannot believe you would stoop this low' cried Molly, as Sherlock gave her a very confused look. 'And you' Molly shouted accusingly at Lyanna 'Have you got anything to say about this?'

'Not really, no' replied Lyanna 'Except that he is an animal in bed'

Molly turned red and tensed up completely. At this, John and Lestrade couldn't keep it together any longer; and they both burst out laughing. Even Mary couldn't hold back a small chuckle.

'What's so funny?' Molly demanded, red in the face with anger.

'Nothing' began Mary 'Except Sherlock's taste in women has certainly surprised us all'

Mary looked over at Lyanna, and gave her knowing smirk.

'Now, now Molly' Lestrade said, once he had calmed down a bit 'Have a glass of champagne and relax'

'Thank you' Molly said through gritted teeth, as she took the glass off Gregg.

Sherlock however was still completely lost on the situation, and so Lyanna leaned and whispered in his ear – 'I will explain later'. Sherlock smiled and nodded before proceeding to sit back down. Lyanna looked over at Molly, who seemed to have seen the 'act of intimacy', and was holding her glass so tight; that her knuckles had turned white. Lyanna waved slightly before resuming her original position of the arm of John's chair.