A/N: I was thinking that Mycroft probably did something similar with Molly as he did with John in ASiP. I decided to do a little something based around that and The Beatles song just fit so well :P Hope you enjoy it! :)

Disclaimer: I own nothing.

Leave Her Alone

…
You better leave my kitten all alone,
You better leave my kitten all alone.
Well, I told you, big, fat bulldog,
You better leave her alone.

You better leave my kitten all alone,
You better leave my kitten all alone.
This dog is gonna get you
If you don't leave her alone.
- 'Leave My Kitten Alone,' The Beatles
…

Sherlock let out a heavy sigh, "I thought we had discussed this, Molly," he said irritably without looking up from the microscope, "I don't like it when people hover."

Out of the corner of his eye he saw Molly open her mouth to say something, before closing it again and shaking her head slightly. "I'm sorry," she said and moved away.

Sherlock glared down the microscope; for some reason it bothered him that she would attempt to keep something from him, which just annoyed him more. "What's the matter?" he asked, looking up with another heavy sigh.

"It's nothing," Molly replied, pretending to be engrossed in her own work.

Sherlock narrowed his eyes as he watched her, "Did he offer you money?" he asked finally.

Molly looked up at him in shock, "What?"

"The man who abducted you, did he offer you money to spy on me?" he elaborated.

"Yes."

Sherlock's eyes narrowed further, "Did you take it?"

Molly looked aghast, "No!"

Sherlock shrugged a shoulder, a little confused by her reaction but pleased that she had rejected the money nonetheless. "You should have taken it," he said easily, turning back to the microscope, "I'm sure you could use the money."

"Who was he?" Molly asked after a moment.

"My enemy, I'm sure he made that clear," Sherlock replied dismissively, writing down some results. He glanced at her, "It won't happen again."

"How can you be so sure?" Molly asked doubtfully.

Sherlock resisted the urge to roll his eyes and flashed her a charming smile instead, "There's nothing to worry about, Molly, he won't hurt you," he assured her.

Molly didn't look convinced, but his assurances appeared to have calmed at least some of her worries and they continued to work in companionable silence.

Much later that evening, Sherlock burst into a well-appointed, yet Spartan office, "Stay away from her," he ordered the man seated behind the desk.

Mycroft Holmes raised an eyebrow looking amused, "Clearly I underestimated Dr. Hooper's importance," he commented drily after a moment.

Sherlock scoffed, "This isn't about Molly," he insisted, Mycroft raised both eyebrows at his use of the pathologist's first name, "this is about you interfering with my work. Molly is very distracting when she's upset and you upset her," he added accusingly.

Mycroft shrugged a shoulder, "If she bothers you, find another hospital."

Sherlock hesitated, "St. Bart's has the best facilities and Molly makes a competent assistant," he said stiffly.

"Caring is not an advantage," Mycroft reminded him.

"I don't care," Sherlock retorted, spitting out the last word as though it tasted bad, "her assistance is useful for my cases, that's all." He gave Mycroft a hard look, "Your interference, on the other hand, is not. Leave her alone," he added, a note of warning creeping into his tone.

Mycroft regarded him for a long moment, "I'll still be keeping tabs on her," he said finally.

"Fine," Sherlock said curtly, "but no more whisking her off in one of your black cars," he stipulated before stalking out of the room as abruptly as he had entered it.

Mycroft watched him go with a thoughtful expression on his face, he hadn't found anything particularly remarkable about the pathologist but clearly his brother had. He would definitely have to keep an eye on her.