A/N: I came up with the idea for this just this afternoon, and I'm just now finding the time to write it (between school, biking a few blocks to buy a pumpkin and having to walk back because it was eleven pounds and put the bike off balance, and taking four kids, ages four, five, six and seven trick-or-treating, I've been a bit busy today). Anyway, I hope you enjoy! Yet another WIP I've just added to my plate... *sigh* Don't worry, the whole story shouldn't be as Halloween-ish as this chapter, that was just in honor of my favorite holiday :) Enjoy the story, and please review!

Disclaimer: I don't own NCIS, Tim McGee or the rights to anything. If you don't recognize it, it's mine.

XXX

"Trick or treat!"

The poorly-enunciated call drifted through the door, accompanied by a light knock. Tim smiled and retrieved the bowl of candy positioned on his desk before answering the small boy outside. The team, much to Tony's relief, had been given the weekend off, and that day had been nothing but paperwork, so it was nice to celebrate Halloween the way everyone else did: without a dead body to attend to.

The boy couldn't have been more than six. His short, unkempt hair poked out from under his Batman mask, and he was shivering slightly from the cold. He repeated the phrase and held out his brown paper bag. As Tim contributed to his growing collection of candy, the boy squinted.

"What are you s'posed to be?"

Tim laughed. "I'm not supposed to be anything. I'm a Federal Agent."

His face scrunched up in confusion. "No, they wear vests and carry guns and stuff."

"Not all the time. I work for NCIS."

"You can't just make places up," the boy said, somewhat comedically.

"Kevin!" His mother scolded, flashing Tim an apologetic smile. "I'm sorry, he watches too much TV…"

"It's fine, ma'am," he replied, smiling. "Hey, Kevin," with this he knelt to the boy's height, "want to see something cool?"

Kevin shrugged. "Sure."

Tim pulled his coat back to reveal the smooth black firearm to the now-awestruck child.

"That is so cool! Where did you get it?"

"Uncle Sam gave it to me."

"Oh." He was crestfallen. "I only have an Uncle Herbert."

Tim couldn't help but laugh at that as Kevin's mother lead him away, chuckling a bit herself. Her faint calls thrown over her shoulder of "Happy Halloween" were met with his amused "Have a good night". Shaking his head, he went back inside.

Some of his best memories of his childhood were from Halloween, dressing up and going door to door; in his teenage years, accompanying Sarah around the neighborhood with her five best friends from elementary school. Then again, he stopped using costumes around age eleven, because his father only allowed him to dress like a Navy captain, but there were still a few good memories.

He was shaken out of his reminiscing by a tentative knock from outside. He stood and crossed over to the entryway, expecting another adorable child with their mother or father, or perhaps a few teenagers looking for a sugar rush. Anything except what he saw.

As he opened the door, he had to look around for a moment before he spotted her. There was no parent or babysitter standing behind this one. It was a little girl, maybe five, in a once-pink princess dress. She had porcelain skin, a small frame, curly hair that was somewhere between blonde and brunette, and big hazel eyes.

Those eyes were currently wide open and unblinking. Her clothes were covered with blood and her hands were shaking. She was holding a large serrated knife, dripping in warm crimson liquid, and her head was tilted to the side.

"Trick or treat," she said.

XXX

A/N: Well? Creepy little girl enough for you, or are you coming back for more? Tell me when you review, please. :)