The Great Cahill Switch

Summary: What if Dan was Ian's brother and Natalie was Amy's sister? Find out how the story unfolds in the first 39 Clues book as our favorite characters take on new roles.

Disclaimer: Don't own 39 Clues. Rick Riordan is AWESOME. (: I took like, two lines of his. I couldn't think of anything else to put there. I do not own ANYTHING. No suing. :P

This idea just came to me. I don't know. If it's useless, I'll scrap it. It's all up to you...the prologue should be clear of mistakes because it's been betaed by Another Artist. Yay! :)

Review and let me know what you think. --Sky

Prologue

"Are you guys sure about this?"

"Yes, Nellie--we're sure." Dan rolled his eyes slightly, climbing into the boat.

Amy climbed in after him. "Everything about the Bermuda Triangle is just a myth."

Nellie muttered, "Oh, don't be so sure..." under her breath, but revved up the speedboat and sped towards the desired location.

Apparently, her au pairees discovered that the next clue was somewhere on a small remote island in the Bermuda Triangle. Nellie was easygoing enough to agree and take them there, but now, she wasn't so sure. And the weird feeling in the pit of her stomach wasn't exactly reassuring either.

"I wonder if we'll see aliens..." Dan said dreamily.

"You're such a dweeb." Amy commented. "There are no such things as aliens."

"Oh, yeah? Then what am I looking at right now?"

"You are so immature!"

Typical Amy and Dan; they were always bickering like normal, every day siblings. It was nice to see them fight because it showed that they could still be normal kids even though they recently discovered they were part of the deadly Madrigal branch.

Oh, if only Nellie could tell them things.

Minutes passed, and Dan started getting bored, as expected of him. "Are we there yet?"

"Almost, kiddo," Nellie answered, gritting her teeth as a strong wind blew toward them.

"When did it get this windy?!" Amy yelled over the blustery air.

"I'm not sure!" The au pair responded, yelling even louder as the wind picked up.

"Are we there yet?!?!" Dan bellowed at the top of his lungs.

"Dan, shut UP!"

"Make me!"

One of these days, Nellie was going to snap. But it wasn't going to be this day.

"We're here..." Nellie trailed off as the boat skidded to a sudden stop.

Now her stomach was really acting up.

Wahh, short prologue, I know. Please review and let me know what you think of my first 39 Clues story! Weee....