*spoiler* he dies *fan girl cries towards the moon*
Evan Tolliver, a computer nerd.
Vespers Rising did not include Ian but Amy has a crush on a certain Evan(Non-Cahill)
In "The 39 Clues" series, Amy Cahill and Evan get close and share a strong bond; however, their relationship doesn't become romantic or serious. They remain focused on their mission and working together as a team to uncover the secrets of their family.
Amy Hope Cahill
Amy Cahill.
Amy and Dan are siblings. Amy loves Dan as a sibling and a brother.
Amy Cahill was born on February 22 , 1994 in Boston, Massachusetts .
Ashley Jackson will play Amy Cahill. Adam Hicks will play Dan Cahill.
In Book Seven: The Viper's Nest: Amy and Dan Cahill figure out they are Madrigals
yes he is in love with Amy cahill.
Hope Cahill and Arthur Trent
No they don't. Amy is with Evan and seems happy but I hope that they break up. A King's Ransom comes out in December so maybe they'll have some romance then.