Alcatraz Versus the Scrivener's Bones (Alcatraz, #2)

Thirteen-year-old Alcatraz Smedry And His Companions Seek Al's Father And Grandfather In The Great Library Of Alexandria, Where They Face Undead, Soul-stealing Wraiths Called The Curators Of Alexandria, And One Of The Scrivener's Bones, A Part-human, Part-machine Mercenary.