Author Note: Ok so like I said before, this was only meant to be a oneshot, but I find it quite fun to write stuff like this and have decided to carry this on for a little longer. And yes, ok, forgot to mention that most of the ones in the last chapter can be found in the Doctor Who annual, so please forgive me! This one is purely one that I created - or rather perfected a little - after it circulated round my school for a while, years ago. It didn't make much sense then, but hopefully now it does.

Enjoy!

oOo

The door to Rose's bedroom swung open again a few hours later and Rose groaned, burying her head under her duvet to try and block out the light.

"Go away," she muttered, but a few seconds later, the end of her bed dipped as someone sat on it. The duvet was dragged from over her head and Jack's face appeared instead.

"Jack, I said go away," she growled, trying to drag the duvet back from him.

"I know, and I will, as soon as you've answered this question."

"Oh not another one of those questions," Rose groaned, lifting her pillow from behind her head and pulling it over the top of her head instead.

"Yep, another one of those questions," Jack grinned, confiscating her pillow too. "Ok, so there's four people in a cabin, right? They're on a deserted island, but all of them are dead. They couldn't have starved because they are surrounded by crates of food. They couldn't have dehydrated because they are surrounded by the ocean, and they couldn't have been killed by dangerous animals because there is nothing else alive on the island - well they're not alive either, but you get my point."

"So whats the question, Jack?" Rose groaned.

"My question is, if they weren't killed by animals, lack of food or dehydration, then how did they die?"

Rose knew that this was one of those questions where the answer either jumped out at you right away, or you had to do some serious thinking, and in her current state, she had to do a lot of thinking. Seeing that she'd never get any peace until she gave Jack an answer, she abandoned the idea of sleeping and sat up in her bed.

"Were there any diseases on the island?" she asked.

"Nope, because there was nothing else on the island, so they wouldn't have been able to survive. Do you give up?" He asked hopefully.

Rose shook her head and began chewing her lip - a sure sign that she was thinking hard and trying to logically work it out.

"Ok, all possible causes of death have been ruled out," she muttered at last. "Except an accident. But they're in a cabin on a deserted island, so how would they have been involved in an accident?"

It was clear she was talking to herself, which Jack found highly amusing, but it would be Rose who had the last laugh, as she said at last "They died because they were in a plane cabin, and the plane crash landed!"

"No way!" Jack was stunned that she'd managed to work that one out. "How...how did you work it out?"

"Well, I knew that the only way they'd died was during some sort of accident, as that was the only remaining explanation. Then I thought about how that accident would have happened if they were on a deserted island. This then made me think about why a cabin would have been built on a deserted island in the first place. You'de have needed a plane to fly the people in, and then it all clicked. Plane cabin crashlanded with crew on board killed them all," Rose explained matter-of-factly.

Jack just stared at her.

"Did you get any of that?" she asked.

"Just went whoosh," he replied, running one hand over his head.

"Like I said Jack, its just common sense - which you and the Doctor amazingly have little of," she laughed, then ducked as her pillow came whizzing through the air towards her. She snatched it up, jammed it under her head, dragged her quilt up over her head again and gave an almighty kick, sending Jack across the room.

"Now out! I need sleep!" she exclaimed, throwing her pillow at him and causing him to dive out of the door. However, she soon regretted this action, as now she had no pillow, and had to get up out of bed to retrieve it again.

"Typical men!" she grumbled, taking two short steps, leaping and landing back in the cozy confines of her bed, where she was asleep almost as soon as her head hit the pillow.