Fiske Cahill, is the man in black :S, and apperantly he went missing when he was a kid
Fiske Cahill/ Man in Black is a Madrigal
the code is fiske
Fiske Cahill
The five children of Gideon and Olivia Cahill in "The 39 Clues" series are Amy, Dan, Natalie, Sinead, and Fiske (also known as Nellie). Each sibling plays a key role in the adventure and the hunt for the 39 clues.
Fiske Cahill and Nellie Gomez and Nellie will act as Amy and Dan's big sister.
The man in black is Fiske Cahill, who happened to be the brother of both Grace and Beatrice Cahill. In book 9 Fiske Cahill explains to Dan and Amy that the madrigals try to bring peace to all the other branches. Then Amy and Dan realize they aren't on the bad side. Fiske explains that he didn't want to participate in the hunt but just before she died grace asked Fiske to watch over Dan and Amy.
For Amy and Dan Cahill finds the 39 clues and bring the Cahill family back together
fiske
Grace and Fiske Cahill's car crash was orchestrated by Isabel Kabra, a member of the Lucian branch of the Cahill family. She was under orders from her mother, Cora Wizard, who is a part of the Ekaterina branch.
Amy Cahill.
Fiske Cahill is the Man In Black, and Grace and Beatrice Cahill's brother.
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.