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.
madrigal
Fiske Cahill/ Man in Black is a Madrigal
The answer for the 39 Clues card 66 is: Oliver.
the name of the 5th 39 clues book is the black circle
Fiske Cahill, is the man in black :S, and apperantly he went missing when he was a kid
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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.
It is black and it has four keys with the animal of each branch on them. And of course the 39 clues logo in the middle of it all.
It is called The Black Circle.
s the fifth book of the The 39 Clues
It means that 29 of the 39 clues are currently available.
They only have 39 clues.