Inspired by a tumblr post from doomslock ( post/72021746961)
Not taking credit for the idea but I had to write it at least a little because it was so lovely
Enjoy! :)
"Bored."
"Sherlock, not now."
"I can't choose when I'm bored, John."
John sighed, glancing at his fiancee for help. Mary nodded privately to John and smiled gently at Sherlock, resting a hand on his arm.
"If we let you deduce the waitress, will you keep quiet until they get here?" she asked in an almost motherly tone. John kicked himself. Why hadn't he thought of that?
Sherlock pouted at Mary, nodding curtly before swishing his coat around dramatically and strolling into the restaurant. Mary grinned at John, who sighed in relief.
The three of them were taking Molly and her fiance, Tom, out for dinner to celebrate their engagement. The latter couple had not yet arrived, and Sherlock seized the opportunity to monopolize John's attention.
"Her rich husband is having an affair and she knows about it- she is taking her two-no, three dogs to a kennel after her shift which ends at...8. Leaving for the beach with her lover...a woman named...Charlotte."
"For God's sake, how could you know her lover's name?" John asked incredulously. Mary giggled.
"John, her underwear, which is unfortunately poking out of her too-small jeans have "Charlotte" written on the waistband." Sherlock said, as if it's obvious.
Mary made a noise.
"Mary?" John asked.
"Charlotte's her sister. She lives with her." Mary said quietly, avoiding Sherlock's gaze.
No one spoke.
"What?" scoffed Sherlock.
"She wouldn't want her husband to know about her affair because that would give him an excuse to leave her and she enjoys the company of his riches, so she would be careful, right? Her phone is clipped to her belt and whoever 'Charlotte' is, she just texted her on her phone which she uses for everything-"
"That could be her second phone."
"No, she's gearing up to pay for a divorce as soon as she gets evidence of her husband's affair, that's why she has this job, and she can't afford a phone like that, meaning it's a gift from him. She wouldn't reserve that phone for texting one lover. That would be her main phone. So Charlotte's not her lover-"
"Doesn't mean she's her sister-"
"-except who else would write their name in their underwear? That's expensive underwear, I know that brand. You'd only write your name in it if naming your property was more important than the value of the underwear itself, which seems to me like something Charlotte would do to prevent her sister from continuing to mooch off of her."
"Could be a roomate."
"A roomate would just toss her out. This bond has to be deeper. Sister."
Silence. Stunned silence. Then:
"John never tossed me out and I certainly did worse than steal his underwear."
Mary opened her mouth to reply, but quickly shut it again. Her face relaxed into a smile, and she looked fondly at John.
"Well he wouldn't, would he?"
John was staring, wide-eyed, at Sherlock and Mary. He had no idea what the hell he was supposed to say next except:
"What the fuck just happened?!"
okay i had to get that out. feel free to continue this btw