A/N: October and no new Halloween requests? Guys, you're killing me. I'll be a ghost haunting these lonely sites on the Interweb forever. Oh, well. At least I'm making a one-shot for you. Your welcome. (I still love you guys by the way that was sarcasm!)

That One Halloween

Molly looked over at Mycroft, impatiently pacing in their living room, watching the clock. Finally, she sighed. "Mycroft, why are you acting like an animal trapped in a cage?"

Mycroft just distractedly grunted and continued his pacing. "Mycroft." Nothing. "Mycroft!"

Mycroft finally snapped his head up and around. "What?"

Molly rolled her eyes. "Why are you acting like an animal trapped in a cage?"

Mycroft said, "It's Halloween."

"Yeah, it is."

"Which means kids will be coming to our house."

"Yeah."

"And asking for candy."

"Glad to see you understand the concept of Halloween."

"You won't let me just turn out the front porch light and just ignore all the trick-or-treaters tonight."

"Because you haven't given me a good reason."

Mycroft muttered something under his breath angrily.

"What was that?"

Mycroft looked up and cringed as he said, "If I told you, you'd probably kick me to the curb."

Molly crossed her arms and simply said, "I'll be the judge of that."

Mycroft laughed nervously as he said, "A couple of years ago, I always had a certain fascination with wolves. One time I actually managed to get close to one, and they're not as friendly as most people would like to think…"

Molly laughed. "So, what, it's just a childhood trauma sort of thing? That's nothing to be ashamed of, and nothing to kick you out over."

"Well, that's not the problem. See, it turns out, well…you remember that seemingly deadly virus scare 5 years back?"

"Yeah?"

"It wasn't deadly, and it wasn't a virus."

Molly tilted her head to the side, brows furrowed. "What do you mean?"

"It was an escaped Baskerville experiment. They were trying to find a cure for werewolves or something along those lines, and they accidentally started a whole new pack." Mycroft rolled up his sleeve to show an alarmingly large bite mark.

Molly stared at him a moment, then smiled. "So, is that it? Tonight being the full moon and you being a werewolf?" She stood up. "I guess you could be concerned about that. But urges can be overcome…you do know there are other supernatural beings besides werewolves around, right? They live all over the world and no one ever knows who they are." Mycroft looked exactly like a confused puppy, and Molly laughed. "I can see the resemblance now that I know what to look for, though."

"Molly, what are you talking about?"

"You must be new to the supernatural if you couldn't tell…" she grinned, showing off a pair of fangs, "That your girlfriend's a vampire!"

Mycroft's mouth dropped open, then he quickly shut it, realizing what that must look like. "Well…I thought there was something different about you; I was just looking for…"

"…Less crazy solutions?" Molly filled in. Mycroft nodded mutely. "Well…" Molly said, looking out the window, "It's just about twilight. What do you say we leave the house and bother Sherlock, or something?"

Mycroft smiled and said, "I'd rather like that. If you give me a minute, I'll be ready."

"Go on then, Mr. Werewolf. I've never seen one of you change before."

Mycroft closed his eyes and felt his bones stretch and compress and when he opened them again, he was looking at Molly from about 3 feet off the ground. Molly grinned and knelt in front of him. Even as a wolf, the red tint of his fur meant it was unmistakably him. She scratched behind his ears and he growled and gently smacked her face with a front paw. She laughed and said, "If Toby hadn't had to been put to sleep, I bet you would have had a good time stalking him, hm?"

Mycroft growled again and then walked off to the closet and brought out a leash with a collar and threw it in Molly's general direction. She smiled and hooked it around his neck. "Shall we go then?"

Molly was walking around with Mycroft on a leash and trying her hardest not to laugh at everyone who automatically assumed that she just happened to know how to make a dog look like a wolf. She'd smile, fangs and all, and everyone would think she just had plastic fangs in. That's why she loved Halloween. It was the one night of the year no one cared if she was a vampire. Then all of a sudden, she heard someone call to her from behind. Mycroft started pulling on the leash and she picked up the pace so he didn't choke himself. She ducked into a nearby park, and she heard someone racing after her. "Hey, you! Stop! What do you think you're doing with that…with that wolf?!"

She slowed at the sound of Sherlock's voice and turned, making sure her face mainly stayed in shadow. She loosened her grip on the leash the tiniest bit, and Sherlock let out one short whistle and Mycroft walked over to him. Sherlock rubbed his head and whispered something into his ear. "Listen, I don't know who you think you are, but you can't just approach a wolf-even if it has a collar and leash-and take it off the streets. Who wouldn't get hurt as soon as it felt threatened?"

Molly lifted her face so the moon hit it and hissed through her fangs. "I think a vampire would qualify." She tilted her head and held out one hand and Mycroft ran back to her, wagging his tail like a domestic dog. "He isn't a big bad wolf. He's my boyfriend, and I'd appreciate it if you didn't belittle my skills with him."

Mycroft let out a low growl when Sherlock took a step closer. Sherlock backed up and just stated, "You're getting awfully territorial, brother dear."

Mycroft huffed, lifted his head so he was touching Molly's hand at her side and smiled. Molly picked the end of his leash up and grinned at Sherlock. "What do you think, should we continue to the hospital so I can get a drink, or should I just get one here? Fresher, if a little bit less sanitary."

Mycroft tilted his head to the side and after a moment turned away and Molly smiled apologetically at Sherlock. "Maybe next time, then." They walked off together, leaving Sherlock to wonder if this actually happened or if he had somehow gotten his hands on some crack and was actually high. It wouldn't be the first time.

The next day Sherlock felt no withdrawal, so he decided to go to Molly and Mycroft's to investigate whether what he saw last night was real. He knocked on the door and Mycroft let him in, all his questions about what was going on ignored. Sherlock walked into the living room to see Molly sipping a red liquid from a coffee mug. "Sherlock, what are you doing here?"

"Is that blood?"

"Um…yeah. Why, you taking a survey?"

Sherlock's eyes widened slightly and followed with, "So last night, that wasn't a trip? Mycroft actually growled at me when I got within 6 feet of you?"

Molly smiled. "Yeah, it's actually a bit sweet. Changing into a werewolf when you start out a human is a bit different than being born one. Until all the impulses are under control it's almost like dealing with a hormonal teenager, and teenage boys don't like to see their girlfriends getting too close to other guys, last I checked."

Mycroft stepped around Sherlock and sat down next to Molly on their couch. "I'm not like a teenage boy."

"No, you're normally like a teenage boy. Turn into a wolf and you're basically a puppy."

Mycroft rolled his eyes and then focused back on Sherlock. "Is there anything else, or did you just barge into our house to see if Molly would have fangs?"

Sherlock shook his head and dug a hand into his coat pocket pulling out a little baggie of dog treats. "Want one before I go?"

Mycroft growled and Sherlock beat a quick retreat. Molly put an arm around Mycroft and whispered, "Did you want one?"

Mycroft turned pink. Molly sniggered. "Shut up," Mycroft mumbled.

"I have a feeling in 10 years we'll still be talking about that one Halloween where Sherlock offered you a milk bone."

"Shut up!"

Molly got an evil smirk on her face as she asked teasingly, "Who's a good boy?"

Mycroft buried his face in his hands before whispering, "Is it me?"

Molly laughed and hugged him. "Yes. It's you."

"Good."

Molly rubbed his head playfully before bringing out a bag of her own. Mycroft gingerly took a dog treat and chewed it. Molly hid her smirk by hugging him tighter. "I know you're laughing at me," Mycroft said.

Molly sighed and just gave him a squeeze. "You'll get used to this eventually."

"I hope so."

"I know so. You're already house-trained, after all, not much to learn after that!"

"Shut up!"