Disclaimer: I still don't own Jimmy Neutron or any related characters.

"Everybody get down!" Jimmy shouted as he ran up to Nick. "Nick? Can you hear me?" There was no response. "Damn it!" he angrily shouted. Jimmy looked to the five trembling kids behind him. He turned back around and pulled the bloody knife out of Nick's head. He wiped it off on Nick's shirt and grabbed its hilt.

"Nick said any of us could be the killer. How do we know it's not you?" Carl nervously questioned while hiding behind Cindy.

"You're just going to have to trust me!" Jimmy angrily yelled. He turned back around and continued walking down the hallway. Everyone else followed him. Jimmy tightened his grip on the knife as the phone rang again.

"So, you want to play the hero now, huh Jimmy?" the voice asked.

"Who the hell are you?" Jimmy shouted into the phone. Everyone crowded around Jimmy in an attempt to listen.

"Right, like I'm really just going to tell you. That's kind of the point of the mask, Neutron."

Jimmy clenched his teeth. "Just tell us your stupid little hint and hang up."

"It's the outsiders that die first," the voice said before hanging up.

Jimmy put the phone away. Outsiders? What the hell does that...Betty! She's not one of my four main friends!" Jimmy shoved Cindy out of the way and tackled Betty to the ground.

Jimmy spun around as the knife fell onto the floor, hatred in his eyes. He ran back over and picked it up. "Get down!" he shouted before flinging it into the ceiling.

The phone rang again. Jimmy answered it. "What is it?"

The voice on the other end just laughed. "Right. Have you ever even seen a horror movie before? You can't kill the villain that easy! God, why don't you just pick up a hitchhiker on a deserted road during a thunderstorm!" the voice said, still laughing.

"Well maybe I will!" Jimmy said before the killer hung up. Well, that was the worst comeback ever.

"Everybody run, he can't crawl in the ceiling that fast!" Jimmy said as the six of them headed down the hallway. Jimmy, Cindy, and Libby took a left and continued running. Sheen, Carl, and Betty took a right.

"Alright, what should we-, wait. Where's Sheen, Carl, and Betty?" Jimmy asked as he looked around. "Darn it! How hard is it to stay together!"

"Maybe we should go back," Libby said.

Cindy shook her head. "The killer's back there. I'm sure they'll be fine."

Jimmy nodded his head. "She's right. Let's keep going."

As they continued down the corridor Libby quietly whispered something. "How can we be so sure one of us isn't the killer?"

They stopped and stared at each other. "This is how," Jimmy told her. "Everybody move a few yards away from each other." Cindy and Libby did as they were told. Jimmy held the knife up. "If I were the killer, wouldn't I throw it at you or something?"

Jimmy put the knife on the floor and kicked it to Cindy. She picked it up and held it for a moment. She then put it back on the floor. She kicked it to Libby. Libby picked it up and handed it to Jimmy.

"Satisfied?" Jimmy asked as he tightened his grip on the knife. Libby nodded her head. "Then let's keep going."