Title: Storm Warning (The 39 Clues #9)
Description: The shadow of the man in black has followed fourteen-year-old Amy Cahill and her younger brother Dan on their worldwide search for 39 Clues that lead to a great power. The man has tried to kill them and he is a Madrigal, as were their parents.  And now the man is ready to step out of the darkness for their final confrontation.
Subjects: Family secrets, Juvenile fiction, Orphans, Brothers and sisters, Children's fiction, Code and cipher stories, Fiction, Families, Ciphers, Secret societies, Adventure and adventurers, Good and evil, History, Genealogy, Mystery and detective stories