A new clue is uncovered from the Vatican and goes on public display, turning 12-year-old Indigo's quest into a race to the Holy City, barely one step ahead of the invisible Sandmen and the Bendy Man, armed with; her wits, training, a Swiss Army knife, an inquisitive street urchin, and 700 years of clues.
R. R. Bowker Indigo's key, paperback/katrina a. fleming
