OK, so this is my first Crossover. I've had this idea since the first few ideas of Chuck this season (4) and I'm finally putting it up here.

Like I said before, this takes place after Crocodile Tears and during the beginning of Season 4 of Chuck. Any questions that arise, PM or whatever. Hope you enjoy it!

Disclaimer: I don't own anything. Darn.

Alex Rider got off the plane, looking for a man with a sign that said Alex Burton. He spotted it and walked over to the man.

"I'm Alex," he said in his American accent. The guy nodded and motioned Alex to follow him to the car. They were in the town of Burbank, and Alex noted all of his surroundings as he was driven to the house of CIA Agent John Casey.

The driver let him off, and Alex took his large Addis bag and walked over to the house belonging to Casey. He knocked on the door. Silence. He knocked again and waited a few more minutes. Alex sighed and pulled out the key he had been given, inserted it and opened the door. He prayed that Casey wasn't in the shower or something, because that would be awkward. He walked into the house, and saw a scrawled note on the table. He picked it up.

Hello Mr. Rider,

I hope you make yourself at home here, we are very happy to be with one of England's best. John Casey will be home from his job later, around 4:30, so we can meet later. Until then, please make yourself comfortable and help yourself to any food in the fridge.

Until later,

Sarah Walker

Alex read it and decided to take Sarah's advice. He walked over to the fridge and opened it. He scowled as he studied its contents. It wasn't very full. He checked the freezer. Frozen food. Fantastic. He did see leftovers, so he got those out and popped them in the microwave. As he waited for them, he explored the house. It was pretty small, but if only a single man was living there, he could understand it. The bed was made, and everything was in order. He was definitely a military man. Alex then checked the house using a bug finder, using a Nintendo DS that Smithers gave him, similar to the one he used on his first mission for MI6. He did a sweep on the house and then sat down on the couch while he ate the leftovers from the fridge. Alex checked his watch. It was 3:25. He had a little over an hour until Casey came home. He already looked at the files of the team he would be working with, so he had no pressing spy matters to do. He decided to be like a normal teenage and watch TV. Alex grabbed the remote and began flicking through the channels. He found that Terminator 2 was on, so he stretched out on the couch and watched the movie. Before he knew it he was asleep from the jet lag.

Casey opened the door and walked into his house. He stopped as he heard a noise coming from the living room. He grabbed his gun from his pocket and walked cautiously into the room. Chuck's eyes widened slightly, but he silently followed Casey around the house. When Casey reached the living room, he stopped, and Chuck came to a halt as well next to him. A young boy was sleeping on the couch, and the television was on. Casey growled and reluctantly stowed the gun away.

"Are you going to wake him?" Chuck asked.

"Yes," Casey replied.

"Are you going to hurt him?" Chuck clarified.

"I am calmly going to wake him and ask him why he is sleeping on my couch, and then I am going to get him the hell out of here before Agent Rider gets here," Casey testily replied.

"Alright, whatever," Chuck said, giving up all hope on Casey.

Casey walked over to the sleeping child and placed a hand on his shoulder. At the touch, the boy's eyes flew open and he grabbed Casey's arm and twisted it behind his back. He kept a firm hold on Casey's arm, and continued to twist it painfully when he felt Casey resisting. Chuck could only stand there, watching the pain evident on Casey's face, although the tough spy tried to hide it.

"What do you want?" the boy asked viciously.

"Who are you? And what do you want?" was Casey's only reply.

"Why do you care?" the boy shot back, extremely defensive.

"You are in my house," Casey spat, "maybe that's why I care."

That stopped the boy from continuing to hurt Casey momentarily. "You're Agent John Casey of the CIA?" he questioned.

"How… how did you know that?" Chuck asked, speaking for the first time since the boy had awakened. The boy looked at Chuck. He glanced between the two men and let go of Casey, but not before grabbing the gun out of Casey's pocket.

"I'm Alex Rider," the boy replied with a British accent, throwing himself back down on the couch.

"Um…what?" were the only words Chuck was able to say. Casey just stared.

"My name is Alex Rider," Alex repeated, looking up at the two men from his position on the couch as though they were idiots.

"You're Agent Rider?" Casey asked in disbelief at the same moment Chuck said, "But you're just a kid!" Alex simply nodded.

"Yeah, I'm Agent Rider, with MI6, and yes, I'm just a kid," he tonelessly replied. Chuck and Casey continued to look at him in disbelief.

"Wait here," Alex sighed, "I'll get something that will help prove who I am. And then I'll also get the stuff I need to deliver to your Miss Beckman and then she can do whatever the hell she wants." He said the last bit in an annoyed and bitter voice, but neither Chuck nor Casey noticed it.

"I'm coming with you," Casey told him, the distrust clear in his voice and visible in his face. The boy just rolled his eyes and sighed again.

"Sure, whatever makes you happy," Alex replied sarcastically getting up off the couch.

"And I'd like my gun back, thanks," Casey sternly said and stretched his hand out.

"I'm sure you have others to use for now," Alex said pointedly and placed the gun in his own pocket after checking the safety.

"My guns aren't toys! You don't know how to properly use one so give it back now!" Casey growled at him, standing over the boy.

Alex shrugged and smirked at Casey, unfazed, and made no move to hand over the gun. "When I see ID or proof, you get it back," he told Casey, staring into the man's furious face without blinking. "Now let's go prove I'm really me, shall we?" And Alex headed off to the guest room that already stored his things.

Casey and Chuck, caught off guard by this British boy looked at each other in obvious disbelief. Casey made to follow Alex into the guest room, but the young spy was already back. In his hand were two envelopes.

Yea! OK, so I hope you enjoyed it. Please review! It makes me a happy person! :)