Chapter Text
There was a sharp knock at the door. Sherlock recognised it immediately.
Mycroft.
He rolled his eyes. Mycroft strode in as if he owned the place, plopping himself down on johns armchair.
“That's John's." Sherlock snaps, more annoyed by mycrofts presence rather than where he sits.
“Im well aware, dear brother.” Mycroft says coldly. “But I'm afraid we have bigger fish to fry.” Mycroft emphasizes the figure of speech, as if using one was unusual to him.
“Bigger fish, you say?” Sherlock's curiosity is rising now.
“Much bigger.”
“Well? What kind of fish are we talking about?
“You have a sister.”
Sherlock almost laughs, but Mycroft doesn't joke like that.Sherlock assumes he misheard.
“Repeat yourself.” he demands slowly.
“We have a sister.” Mycroft restates. “Eurus.”
“Eurus? That's Greek…the east wind." the realisation dawns on Sherlock. whenever Mycroft could see Sherlock was worried he'd always tease him. 'feeling an east wind, brother?' Mycroft would tease.
"why don't I know her?!" Sherlock snaps.
Mycroft sighs.
"She was born when you were at boarding school. if you read your mother's letters you would've known. You were 12 at the time. And she was sent off when you were 17, a few months before you left the school. Mother and Father were so devastated they decided to not tell you.” mycroft explains.
“sent off?” Sherlock asks.
“To a mental health facility. She was planning to murder you.” Mycroft states.
“Murder me? Why?” Sherlock asks, trying to hide his shock.
“She was upset that you wouldn't visit.. She had this odd admiration for you. Always asked when you'd come home to see her. And when she realised you wouldn’t?.. Well..” mycroft drawls off.
“When she realised , being the clever girl she was, that it was impossible to kill you without even meeting you.. She set her murderous tendencies on someone else.”
“Who?” Sherlock asks, alreadying knowing he wont like the answer.
“Herself.” Mycroft says it so coldly, so blunt. As if they arent discussing a five year old thats suicidal.
“Why am I only learning about her now?” Sherlock asks. Straight to the point.
“The facility that she's been kept in won't keep her anymore. They say she's too disturbing. I'm looking for a new place for her. But when I told her in the meantime that she'd live with me, she started screaming that she didn't want to be near me. I jokingly asked if she'd rather stay with you and.. She said yes.” Mycroft explains, oddly sheepishly.
“So you expect me to keep a girl, who once wished to murder me, under my roof?” Sherlock snaps.
“I don't believe she wishes to murder you anymore, but I will give you a taser.” Mycroft offers.
“Oh , a taser will definitely help if I'm asleep.” Sherlock sneers.
“John will have one too.” Mycroft suggests.
“Hed be halfway across the flat, we don't share a bed.”
“You don't?"
“No!”
“Fine. sedate her at night and lock her door.”
“Whats in it for me?”
Mycroft hesitates. “A thousand pounds.”
“Five thousand.”
“I dont have that money sherlock-”
“Yes you do.”
Mycroft sighs and takes a wad of cash out of his suit pocket. Placing it on the coffee table between them.
“You will be expected to feed her , and keep her alive.” mycroft states. “She should only be here for a month at most. John will probably feel sorry for her so i doubt he’ll have an issue. Shell arrive tomorrow.”
Mycroft leaves the file that was previously sitting on his lap on the coffee table and then stands and leaves.
As soon as he's gone john exits the kitchen where he was secretly listening the whole time with a shocked expression upon his face.
“I’ll clean the guest bedroom..” he murmurs.
John's big heart was something Sherlock was always fascinated by. He could never understand how John could be so empathetic and caring but while also standing his ground and allowing himself to be angry. And yet he was still so clever. Obviously not as clever as Sherlock but Sherlock was always awed by John's abilities in empathy to not affect his intelligence. Sherlock watches as john walks down the hall, to prepare a room for his sister.
The next day Mycroft arrived precisely at 3pm. He pushed in a scrawny young woman and then followed her in. Sherlock stared at the woman for a moment, Eurus. She had the same blue-Gray eyes as him, the same black curly hair (hers was longer however), the same nose and eyebrows. But her eyes were haunted, she looked physically and mentally unwell.
Sherlock's heart stopped the second she moved , he expected her to attack him, knock him down and strangle him and kill him while John watched.
He found himself trapped, her arms around him like a vice. But she wasn't attacking him. She was hugging him.
Sherlock's gaze flicked up to Mycroft. Mycroft looked startled, Sherlock assumes he must be looking the same way. Mycroft looks up and mouths three words.
‘Don't trust her.”
John clears his throat “uhm, hello , Eurus. I'm John Watson.. I'm a friend of your brother.” His voice was soft, gentle. As if trying not to poke a bear or startle a wasp, But afraid.
Eurus had stopped grabbing onto Sherlock now. She looked ready to bolt.
She looked john up and down. Mycroft slid out the door.
She didn't move for a long moment and for a second Sherlock didn't feel so afraid. Then she moved, fast.