Read The Pull of Destiny!

Disclaimer: I don not own 39 clues

They were in posh London, having been sent for by Isabel and Vikram Kabra. They're cover story was a party for Natalie's thirteenth birthday. But it wasn't to be like that. Ian and Natalie knew that they're parents would probably scold them because of their failure to retrieve the clues.
The plane landed and Ian spotted a black limousine parked near the airstrip. They traveled only on Lucian jets but the rumor was that if the Lucians lost the hunt, their richness would evaporate.
As they disembarked the jet, Natalie looked up to see smoke in the sky. The weird thing was, it had formed letters: NATALIE, MARRY ME! LOVE, ZACH CONNORS She scowled. Zach was a classmate of Ian but when it came to girls, he was a complete perverted looser. True, he was one of the richest kids in London and Isabel Kabra would have wanted him to become a perfect match for Natalie, but still. You wouldn't want to have a pervert as a boyfriend would you?
The limousine cruised silently along the highway and they got to the Kabra Mansion.
Natalie shuddered at the memories of her childhood. She did not want to come back to this place. Ever since embarking on the hunt, she had realized how little freedom she had.
But she was the Natalie Kabra, world's youngest assassin and fashion trendsetter. And she was going to get out of this mansion alive.

"YOU LIED, NATALIE! YOU ARE NOTHING TO US! YOU, IAN! YOU WERE SUPPOSED TO LOOK AFTER YOUR SISTER AND YOURSELF! BUT WHAT DID YOU DO? YOU FELL IN LOVE WITH AMY CAHILL! AND YOU NATALIE WITH DANIEL! DANIEL CAHILL!" Isabel had yelled at them the moment they had gotten home. Vikram had been meeting with some Lucians and had been too busy to shout at them but he had glared at the two of them. "Well what if we don't want to do this anymore?" Natalie asked quietly. In response, Isabel slapped her. The pain was so intense that Natalie staggered back. She felt blood in her mouth and tears in her eyes but she refused to let her mother see her cry.
"Get out of my sight!" Isabel said in a cold voice.

They backed out of the room and walked to their quarters. "Is it true?" Ian asked after a moment of silence "That you love Dan?"
Natalie nodded slowly. "As much as you love Amy"
That ended their conversation.