The Science of Sentiment (BBC Sherlock x Reader)

Chapter 16: Revelations

You arrive at the dark curb about five minutes late. The street is fairly deserted, and the only lights are those offered by the few shops still open. A cold wind tosses your long hair, and you suddenly wish you had taken a jacket with you. You take a seat on the curb, scanning the road for any oncoming cars. London becomes eerily silent, and the shadows on the buildings begin to look sinister.
"Hello," a voice pipes from behind you.
You let out something between a scream and a squeak, jumping to your feet and whirling around to face the source of the voice.
Mycroft stands before you with a smug look on his face and his signature umbrella in hand.
"Mycroft you scared the shit out of me!" You exclaim, disregarding all mannerism.
He chuckles softly. "I'm terribly sorry. that wasn't very nice of me, was it?"
You laugh and look at your feet. "No, no it wasn't."
He offers you his elbow. "A walk?"
You link your arm in his and smile. "Sure. What is this about anyway?"
The elder Holmes begins to guide you down the dark road without any particular destination.
"How long have you and my brother been together?"
"Ah, you're a clever one, aren't you? We've been dating for nearly a month now."
He nods solemnly. "I'll admit, it is odd. He's rarely ever shown any interest in a girl."
You giggle. "He did seem like a bit of an...amateur on our first date."
Mycroft smirks at the thought of his younger brother leading you around London on a date.
"I know this is sudden, but I have a favor for you, (y/n)."
You glance up to see a slightly forlorn and sincere looking Mycroft.
"Of course. What is it?"
"Drop the case."
You slow in your tracks.
"What can you tell me about it? Why is it so dangerous and why do you seem to be so involved in it?"
The man relented a heavy sigh, running a hand down his face.
"(Y/n)...I've never seen Sherlock look at someone the way he looks at you. He's extremely fond of you, you see. So...I don't wish to see him lose you."
At this point, you've pulled his completely to a stop. You grab his hands roughly.
"Mycroft, please. I know this case is familiar to me somehow, if you could just-"
"You don't want to know! You'll only be in more danger!" You've never seen Mycroft like this. His expression is angry and guarded. "For once my brother is genuinely happy. I couldn't stand the thought that I put his source of happiness directly I harms way."
You swallow the lump that has formed in your throat and glare at the ground.
Mycroft sighs in frustration. "If you must know...this cult- it was something that your parents were involved in."
At this, your eyes snap up to meet his.
"My parents are dead," you hiss.
"They are," he concedes. "But their cause of death is something bigger and far more dangerous than the both of us. Please, just let this go."
You can feel tears forming around your vision and you shake your head. "I'm sorry Mycroft- I know it isn't safe, but if this is about my parents, I must know more."
His expression softens a bit. "You're too curious for your own good."
"Perhaps," you admit with a shaky laugh.
Mycroft pulls you closer to the street and hails a cab. When it stops, he pulls the door open for you and you slip into the back seat.
"So long, (y/n). If nothing else, do take care of my brother."
You smile at the man. "I will. Goodbye, Mycroft."

--

Once back at the flat, you go straight to Sherlock's room instead of your own. He lays on the bed in silence with his sheets drawn up to his chest. A lamp is on and he appears to be deep in though- he doesn't even turn when you enter the room. You stumble over to the other side of the bed and clumsily pull off your skirt. You strip down to your white cami and blue panties and climb into the bed next to the detective. Finally, he turns to meet your eyes. He looks a bit relieved to see you home and he kisses you gently.
You return the kiss, but he pulls away quickly, sniffing at your collar bone.
"You were with Mycroft," he says with a accusatory look.
"I was," you admit. "He told me to say hello."
Sherlock looks doubly shocked at your upfront demeanor.
"What were you doing with him? I thought you were with Lillian."
You chuckle. "Relax, Sherly. He said he wanted to talk. He was just trying to get me to convince you to drop the case we're working on. I had to lie or you would never have let me go."
"And apparently I should have! I don't trust him..." He murmurs, pulling you closer to him.
"I'm sorry."
He hums in reply, resting his head on yours. "You aren't wearing any trousers," he notes.
"No, I'm not."
He smirks and kisses the top of your head. Soon you can feel his movements slow, and his steady breathing lulls you to sleep.