So just a brief note, I wrote a similar story quite a while ago under a different account but fell out of love with writing so stopped. Since then I'd like to think my writing ability has improved somewhat so I'm trying again. I've always liked this as an idea and want to try and do it justice. Enjoy!
In front of Mrs Hudson stood two teenagers; a boy and a girl. They looked very similar, but then again they were twins. They looked at each other confusedly upon seeing Mrs Hudson.
"Erm... Hi we're looking for Sherlock Holmes, does he happen to be in?" asked the girl as she fiddled with the sleeves of her baggy jumper.
"Oh yes, he's right upstairs. SHERLOCK SOMEONE TO SEE YOU!" The twins flinched slightly at the unexpected loudness, but were amused by her behaviour. The girl looked encouragingly at the boy and led the way upstairs. John opened the door before they had the chance to knock and looked at the twins.
"Yes?" John asked, trying hard not to shout at the twins who had just interrupted an argument about whether or not Sherlock should be allowed to 'toast' eyeballs in the microwave.
"Sherlock Homes?" asked the boy. John gestured violently towards the kitchen. The teens drank in their surroundings, trying to imprint every detail into their memory. They stopped as their eyes fell onto the man they had been searching for.
"What?" Sherlock snapped. John shot him a warning glare.
"Hello Mr Holmes, we were wondering if we could talk to you in private about something personal." Sherlock glanced at the boy and went back to the microwave to fiddle with the settings.
"No, I'm not interested." The girl walked towards him, desperately grabbing his arm.
"Please it's important." she begged as she tried to pull him to face her. He ripped his arm from her grasp and looked at her angrily.
"I said no, now go away. I don't deal with children."
"Not even your own?" she asked, immediately covering her mouth with her hand and turning to look at her twin brother who was glaring at her. This was not how they had planned this going. They had wanted to sit Sherlock down and explain everything calmly.
"I beg your pardon." John almost shouted in disbelief. The girl rummaged around her bag before pulling out some papers triumphantly. Sherlock snatched the papers from her hand and skimmed through them. He glanced at the children before walking swiftly out of the apartment.
"Where's he off to?" asked the boy confused.
"I have no idea..." John was in shock, he stared at the children, finally seeing the striking resemblance. As a result of their mother being Indian their skin was dark, but the girls face seemed almost identical. Despite the boy looking drastically different from his sister his lanky body was typically Sherlock. John went to chase after Sherlock suddenly realising the inner turmoil his friend must be facing. "Stay here" he said offhandedly to the teens as he sped after him.
The teens stood there for a few moments after they heard the door close after him until the boy started laughing gently.
"What? This is not a laughing matter Sohail, I really fucked it up." The girl said as Sohail flopped down onto the couch.
"It's nothing. But I mean you were a nervous wreck on the train-"
"So were you." she interjected
"Yeah ok fair, but like it's out of the way now we can just chill."
"We cannot chill. Ugh this really couldn't have gone worse." Sohail chuckled at his sister before standing up and wrapping his arms around her in a hug.
"Shabnam, calm down. Honestly, you did a good job. Far better than I did, I just stood there. Now come sit down I wanna nap."
"Sherlock! Sherlock wait!" Sherlock didn't seem to notice John's shouting as he got into the cab. John rushed into the cab behind him slightly out of breath. "Where are you going? You can't just leave them in there."
"Diogenes Club." Sherlock said to the cab driver, completely ignoring John.
"Sherlock you can't honestly be going to see Mycroft. We have a situation to deal with here. Sherlock? You can't just ignore me. God you're so infuriating." John gave up and sat silently for the rest of a drive in a huff.
