A/N: Sorry it took me so long to get this up! But trust me, this chapter will totally make up for it! Oh, and thanks to HORSELUVER101, but if you're still reading, it would be a lot more convenient for me, so I could just send you a review reply...

On with the chappie!

Update: I made a few changes in this chapter. Thanks to KirstynT for pointing out my mistake. The only changes I really made were to replace the term "halfa" with "half-ghost." Shiznit, and the stupid page break things aren't working.

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"Oh, hurry up, you stupid computer!" Valerie exclaimed in frustration. Her laptop was so slow!

In fact, the ghost hunter thought darkly, knowing my luck, I wouldn't be surprised if the stupid thing froze right now…

Apparently, Valerie didn't quite know her luck, because the page kept loading… bit by bit… To while away the time, she took a look at the name of the website that was loading. It said (minus the spaces, but it's not a real website!):

"h t t p / w w w . t h e o r y z o n e . o r g / p a r a n o r m a l / g h o s t s / g h o s t h y br i d s"

Finally,the page appeared. The background of the page was a silvery-white color, and the title read "Theory: Ghost Hybrids". Valerie wasted no time in reading the whole (somewhat brief) article. As her eyes traveled down the page, they grew wider and wider…

Theory: Ghost Hybrids

A lot of scientists and ghost experts alike disregard the possibility of the existence of ghost-human hybrids (also known as "half-ghosts"), saying and believing it is impossible. Thus, no extensive research has ever been conducted by them on it. But I have irrefutable evidence that there are two, if not more, of these unique hybrids in this world: my friend knows one.

You might be asking, What is a ghost hybrid, exactly? Well, they are, as the name suggests, a cross between a human and a ghost. How they came to be is uncertain. It seems doubtful that a ghost and a human reproduced to create one. However, I have come up with a few likely theories:

1. When the half-ghost was still fully human, its DNA could have been altered somehow.

2. They could have accidentally ingested ectoplasm (or some other ghostly material) and got it all in their system.

3. They could have been over-exposed to the Ghost Zone (an odd world to which all ghost are native.)

While all or none of these may be true, there are still other possibilities out there.

Ghost hybrids have a number of special abilities that no human could achieve. There are some things that even full ghosts can't do! For instance, a half-ghost can switch between a human appearance and a ghost appearance. While they may look different, there is no doubt that they will still be a half-ghost.

Luckily, even though half-ghosts with a human façade will blend in easily, there are some slight signs that are unique to only them:

1. While half-ghosts can only use the entirety of their powers in ghost mode, there are a few they can still use in human form, such as invisibility, intangibility, and ectoplasmic rays.

2. They might be secretive about things like where they've been and where they're going.

3. When angered, their eyes may change color (usually they change to the color they are in ghost mode).

4. Like all ghosts, half-ghosts have something called a ghost sense that is triggered whenever a ghost is nearby. This power varies in form from ghost to ghost, but it's most commonly a kind of mist. The ghost sense can still happen while half-ghosts are in human form.

5. Half-ghosts tend to feel a bit cooler to the touch than other humans. It's not as drastic as the icy cold of a ghost, but it is slightly distinguishable.

Not much more is known about half-ghosts. The only other information I've gathered (with extensive interrogation and examination) is that one of the half-ghosts is a middle-aged adult, and that another is a teenager. So be on the lookout – one of your peers could actually be a powerful ghost hybrid…

The last sentence was slightly eerie, in the way that it applied to Valerie: if the ghost boy really was a half-ghost, then a dangerous enemy could be in her very own school!

Valerie panicked at this thought. Who knows how many people he could hurt, or even kill? She would need to find him and stop him in any means possible.

Which may mean, the ghost hunter thought worriedly, that I'll have to tell someone about this…

Quickly, she went through a list of people:

Her dad? No, he would just get worried and over-protective of Valerie and possibly keep her home from school.

Mr. And Mrs. Fenton? Pfft. Yeah right, they would just get overexcited and mess everything up.

The mayor? Yeah, like he would believe her. And what would he do about it anyway? He couldn't go around and tell the whole town; it'd cause mass panic.

Principal Ishiyama? Valerie didn't really know her that well, and she wanted to tell someone she trusted…

One of her teachers? That was never going to happen. She trusted them less than the principal.

Beginning to run out of ideas, Valerie lay back on her bed, her dark, wavy hair spreading out over the pillow. Who did she trust more than anyone else in the world?

And suddenly, it hit her harder than a mile-long train going at speeds of over 200 miles per hour with a fast tailwind and the rails covered in oil – But I digress. Let's try this again…

And suddenly, it hit her: The only person she could trust with this sort of information was… Danny Fenton!

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"Let's see…" Tucker said to himself, holding his PDA in his hand. "I've changed into my PJs…" He checked off a box next to "Pajamas" at the top of a list on the mechanical device. "I've brushed my teeth, shut off the computer, cleaned my precious PDA, checked for live dust bunnies under the bed, and made sure that there are no ghosts in the vicinity. I'm good!"

Tucker turned his PDA off for the night, and placed it on his desk. It was still a bit early (about quarter of nine), but to no one else's knowledge, Tucker liked to read before going to sleep sometimes. As he often fell asleep reading, though, he got ready for bed a bit ahead of schedule.

Tonight, he grabbed his current PDA's manual to peruse. (It wasn't as if he needed to, seeing as he had owned over a half-dozen of them in the past, but they had all been destroyed thanks to ghosts. He just felt like it.) Before climbing into bed, he took a look out the window. Then, he did a double take: Sam was out there!

Tucker immediately opened his window. "Sam! Sam, what are you doing outside in the dark?"

She looked up at his voice, slightly startled. In the light of a streetlamp, the techno-geek saw tear streaks all over her face, and around her eyes was pink and puffy. She had obviously cried long and hard. "Oh, hey Tuck," she said glumly, then continued walking.

"Wait! Sam, what's wrong?" Tucker exclaimed concernedly.

The Goth girl turned around to face the window he was leaning out of, and opened her mouth to speak. Then, she closed it and shook her head sadly.

"Alright… Well, I'll see you tomorrow, then," Tucker said as she walked away. He closed the window and got into his bed with the manual, wondering what could've made her so depressed.

Well, he thought, whatever it was is going to get a talking-to, whether it's inanimate or living…

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A/N: Hee hee, how'd you like that chapter? I'm especially proud of the Valerie part! Please review, and I'll update ASAP. I can't make any guarantees, though, because I'm running two stories at once, and I may have a third one on the way... PLEASE REVIEW!