It was a nice summer day in London on the June the 12th, just a month before the anniversary of moving into 221 Bakers Street. Surprisingly though Sherlock wasn't doing much, not even playing his violin, he wasn't even accepting cases. Finally I had had enough of his sour mood!

"Sherlock, what on earth is the matter with you today! You have been sulking, even though there are two new cases that would usually tingle your mind." I rather harshly asked him.

"Watson, I am in no mode for idiotic questions. Take your dog for a walk or go get some groceries. I don't care." Sherlock said with a hint of annoyance, that I knew not to push any more, perhaps later today though?

"We are running low on some apples and milk. I'll be back soon Sherlock." I said resigned to not knowing till later today.

As I was shopping I couldn't shake the feeling that something important happened today, so I decided that when I got back I would search news articles for anything that was significant on the 12th of June.

Before I started my research, I thought it was prudent I ask Mrs Hudson if she knew why Sherlock was like that. Luckily luck was on my side, for Sherlock was visiting his brother, which come to think about was very suspicious because he has never willingly gone to Mycroft. Mrs Hudson was in the kitchen, preparing a cup of tea.

"Mrs Hudson, do you know why Sherlock has been acting strange all morning today?" I asked her, jut as she was about to ask me something, probably if I wanted a cup.

"Yes, in fact I do. You see John, there were originally three Holmes, not two, but the third one was the youngest sibling and they all cared for each other, but something happened to her-"

"Her?!" I interrupted Mrs Hudson "Sorry, do continue."

"As I was saying, something happened to her. Cassandra Elizabeth Holmes. She was a special one. She could make Mycroft and Sherlock get along and she was just, if not more so, as clever as Mycroft and Sherlock.

On her birthday, she was turning 16, she never showed up at her party. Many things happened after that. The Holmes brothers blamed each other, the police and private detectives and investigators couldn't find a trace of her after leading to the great waterfall that was on their property. They presumed she died by falling into the water. Everyone who knew her knows that is impossible. Now today would have been her...24th birthday. I don't know anything else, I'm sorry John." She said, quiet out of breathe.

"Oh that is quite alright. Thank you Mrs Hudson, you have been most helpful."I replied sincerely

So now that I know why Sherlock is acting this way, I can help him out, he is a friend after all. Now what to do about this new information?

Hi everyone,

Whitemiko12 here, just going to say sorry before I write another chapter. I have many writing mistakes and thank you to whoever picked that up. I am hoping you enjoy this story!