Salim and Ted quickly become friends. What is it about each boy that appeals to the other?

Which of Kat’s characteristics suggest that she’s the family rebel? What is she rebelling against? How does her nature compel her to join with Ted to try to solve the Salim mystery?

Ted’s character arc can be understood in different ways. He transitions from social disconnection toward better connection within his family, but he also transitions from relative submissiveness toward self-assurance as he leaves the stability of his home (and his parents’ rules) to solve the mystery. What other transformations does Ted experience? How do those transformations tie into each other?