Convicts, murderers and the shady inhabitants of the London underworld are part of daily life for 12-year-old printers devil, Mog Winter after all, Mog prints their WANTED posters But a face-to-face encounter with a real crook leads to Mog becoming enmeshed in an ingenious theft, a series of mistaken identities and a murder huntall connected to a recently docked ship from the Indian subcontinent, and Mogs own mysterious past.