When Mr. Socrates, a member of the shadowy PermanentAssociation, hears of a hunchbacked infant with theability to transform his appearance, he decides to take him in.Naming him Modo, he raises the boy in isolation, training himto become a secret agent. Then, when Modo turns fourteen,his education is complete. He is transported to the streets ofdowntown London and abandoned, penniless, to try to survive.
But Modo is resourceful, and he finds a way to get by,keeping to himself . . . until one day, when the beautiful OctaviaMilkweed knocks on his door. Soon, with the help of Mr.Socrates, Modo and Octavia find themselves uncovering a sinisterplot being carried out in the very sewers beneath their feet.Will they be able to stop the mad scientist Dr. Hyde before heunleashes his monstrous plans upon unsuspecting Londoners?