Yes, as indicated by their last names, they are related, and this relation is that of being siblings.
Amy and Dan Cahill are part of the Ekaterina branch in the 39 Clues series. The Ekaterina branch is known for their intelligence and passion for knowledge.
Amy and Dan are part of the Cahill family, a secret society in The 39 Clues series. They belong to the Madrigal branch of the Cahill family, one of the most secretive and enigmatic branches.
Amy and Dan are Madrigals. The Madrigals decended from Madeline Cahill. Olivia Cahill (the original cahill) was pregnant with her when Olivia died. Madeline then decided to carry out her mother's wishes. Madrigals try to keep the other branches from finding all the 39 clues. Hope this helps! :)
Their branch is....... madrigal (srry i wanted it to be dramatic) :D
Amy and Ian are not just cousins, they are also protagonists in "The 39 Clues" book series where they work together to solve mysteries and uncover their family's secrets.
The older sister of Dan Cahill.
Amy Cahill and her younger brother Dan
Amy Cahill.
Amy Cahill and her younger brother Dan
Ashley Jackson will play Amy Cahill. Adam Hicks will play Dan Cahill.
Fiske Cahill and Nellie Gomez and Nellie will act as Amy and Dan's big sister.
The Man In Black is Grace and Beatrice Cahill's brother. He disappeared for 50 years and his identity is found out in Storm Warning. He is a Madrigal and is said to have many similar traits to Amy and Dan. In Into the Gauntlet, he and Nellie Gomez will get joint custody of Amy and Dan.
in 39 clues amy waers a bright green v kneck top with soft light blue jeans . i know this cuz i am amy cahill in real . and also that i have acted in the movis of 39 clues as amy cahill.
Amy and Dan are siblings. Amy loves Dan as a sibling and a brother.
For Amy and Dan Cahill finds the 39 clues and bring the Cahill family back together
Ashley Jackson plays Amy Cahill. Adam Hicks plays Dan Cahill.
i believe Amy and Dan are Madrigals.