I don't own Life With Derek. If I did though, it'd be called Life with Dasey! (Real original, right?) LOL!

I'm sorry for the extremely long delay everyone and I thank you for reading and reviewing. I appreciate it. :-]

'Thriller'- Michael Jackson

I named this chapter 'Thriller' for two reasons.

1) In honor of the King of Pop, because he was great and will be greatly missed

2) This chapter is like a 'Thriller' in many ways- at least to me it is.

3 R.I.P MICHAEL JOSEPH JACKSON 3

WE LOVE YOU AND KNOW THAT YOU WILL ALWAYS BE WITH US FOREVER AND EVER IN OUR HEARTS. THIS IS FOR YOU.

Derek P.O.V.

"Derek!" I heard someone scream my name over the deafeningly loud music and turn to see my uptight step-sister. Just great!

"Casey!"I make my way towards her. "What are you doing here?"

"That's for me to know." she responds shortly. I roll my eyes at that remark.

"Yeah, like I care that much. Whatever, just don't follow me." I scope the room for the hot red head I had seen earlier. The one I was about to talk to, before I was so rudely interrupted. "That's the last thing I need at a college party."

"HA!" Casey laughs, bringing my attention back to her. "Me follow you?! Haha. Yeah right." Just then a group of fraternity brothers ran through the room with a keg and pushed Casey into me. Her hands landed on my shoulders and I caught her at the waist.

"Hey there lovebirds!" a very drunk college junior shouts as he follows the keg. This is accompanied by laughter from surrounding people. Casey blushes, and we immediately separate from each other, going in different directions.

"Derek!" I lift my head off of the steering wheel and nearly jump out of my skin. "Nice to see you finally awake son." I'm sitting in the Prince and turn to see dad at the window. I roll it down.

"Sorry about that."

"It's okay, just remember to pick up Marti this afternoon." I nod in understanding.

"Got it." Dad looks at me concerned.

"You okay Derek?"

"Yeah, I'm fine. Why?" I try to act fine as he struggles to say something.

"It just seems like - mmm." Dad stops talking and gives me a smile. "Never mind."

"You sure?" Why did I ask?

"Definitely. I'm sure you're fine, if you say you are. Look you better get going, you'll be late."

"Right. Can you call Casey?" At that moment, Casey sped by on her roller-skates. "Oh great! See ya dad." I start the car and go after my determined step-sister.

Casey P.O.V.

Crap! He saw me. I knew I wouldn't make it through without him seeing me. What's worse I'm terrible at roller-skating, so I can't go as fast as Lizzie and mom. Why couldn't we live right next to school?

"Casey." Derek pulls up right next to me and slows down. I ignore him. "Casey get in the car." He demands.

"I think I'm good." I answer without looking at him. "Thanks Derek, I'll just continue to skate my way school." I try to speed up.

"Casey, school is like another three miles away. You'll be late at the rate that you're going." He was right, but I can't get in the car.

"Being late won't hurt." Of course I'm lying. Being late could hurt me for a lifetime.

"Would you stop being so difficult." Derek orders.

"I'm not being difficult." I calmly state.

"Right and you're not pregnant too." At him saying that, I lose my balance and fall to the ground. Derek steps on the breaks and gets out of the car to rush to my side. "You okay?" He grabs my arm.

"I'm good." With his -unwanted- help, I bring myself to my feet.

"Look, could you just get in the car? I promise I won't even say the word pregnant or baby." He holds up his hand as a promise. I want to get in the car, but I feel like I shouldn't. I look at my watch and decide to give in. I can't be late and he did promise not to bring up any baby stuff.

"Fine." Derek smiles and hands me my sneakers which had fallen off my shoulder when I fell. I quickly skate to the passenger's side and get in the car as he buckles his seatbelt.

"So, what are we gonna do about the embryo?" I shoot him a massive glare. "You have to be about in the middle of your first trimester."

"DEREK!" he gives me his signature smirk.

"I promised that I wouldn't say the words 'pregnant' or 'baby', not embryo or 'first trimester'." Darn it! He had me.

Lizzie P.O.V.

"How long was it today?" I ask Edwin as he takes out the black notebook from his book bag. We had just left the house, and were on the school bus, with a few other kids. Most of them were younger siblings of Casey and Derek's classmates, luckily though today is a class filed trip, so everyone is going around trying to trade lunches. Basically, no one is paying us any attention. He checks the book.

"About . . ." he scrolls down the page to find today's note. "About an hour. Which is a good ten minutes more than yesterday."

"Hmmmm" I think. "Almost an hour today and last week it was almost a half hour."

"It looks like Casey is gaining a good five to ten minutes a day in the bathroom." Edwin observes.

"You're right." I agree. "But what about her increasing bathroom time has to do with Derek?" Edwin scrunched up his face in thought.

"I don't know." He admits.

"Well what did you hear them talk about in Casey's room?" I asked hoping that he retrieved new information.

"Unfortunately, nothing." He sank in his seat. "Nora caught me before I heard anything useful." I take a deep sigh.

"It's been two weeks and we have nothing!" I respond aggravated.

"We must have something Lizzie." Edwin tries to be optimistic. "We just have to look farther back in our research." He begins flipping farther back in the pages.

"I'm not sure Edwin. I overheard George asking Derek if he was okay this morning before Derek went after Casey- who was once more trying to avoid him." I sink into my seat becoming more aggravated at the thought that George and Nora might get to Derek and Casey before Edwin and I do.

"No way." I hear Edwin whisper.

"What?" I ask him in a whisper. He flips between the pages again, as if to check himself. I scout closer to him and look at the same pages.

"Liz." He looks at me deeply. "I think I may know what's with Casey and Derek."

Just like the 'Thriller' video, I ended this in a cliffhanger! Isn't it great! *teethly smile*