Lizzie and Edwin chuckled as they listened in on the argument that was currently issuing from Derek's bedroom.

The reason for this argument was simple: a day stuck in one room with no toilet facilities and only chocolate bars to eat was beginning to grate on Casey's nerves. And the fact that Casey was getting annoyed and fidgety was making Derek get annoyed.

Two kegs of gunpowder and two very short fuses.

The two had spent more than half the day fighting.

"When should we let them out?" Lizzie said looking at Edwin's convulsed face.

"Maybe later tonight, we don't want to completely ruin all harmony we have in the house."

"We had harmony in this house?"

Edwin stopped laughing for a second before they both cracked up again.

"Well, your plan worked. They aren't getting along anymore. And they have no idea we did it." Edwin said putting his ear to the door again.

"Are you sure putting them in there together was a good idea? I mean, what if they find out we did it and come after us to get revenge?"

Edwin removed his ear and glared at Lizzie.

"It was your idea Lizzie! You can't suggest something as great as that and then back out of it!"

"It's gone awfully quiet in there hasn't it?" Lizzie said after a pause.

"They're probably making out from all that charged tension."

Pause.

"EW!" they said together before hurrying away from the door.

Derek sat back against the door.

"I don't believe this." He said looking up at Casey who slid down next to him.

"How could they do this to us?" she said simply, putting her head on his shoulder.

"I am going to kill them."

"Leave my sister to me."

"What do you say we work together and get them both back?"

"What did you have in mind?"

Derek grinned at her.

"One word. Handcuffs."

A grin spread over Casey's features.

"Good plan." Was all she said.