The Marco Effect (Department Q #5)

A teenaged boy on the run propels Detective Carl Morck into Department Q's most sinister case yet Fifteen-year-old Marco Jameson longs to become a Danish citizen and go to school like a normal teenager. Unfortunately, his Uncle Zola forces the children of their former gypsy clan to beg and steal for his personal gain. When Marco discovers a dead body that proves the true extent of Zola's criminal activities, he goes on the run. But it turns out his family members aren't the only ones who want to keep Marco silent ... forever. Detective Carl Morck wants to save the boy, but Marco's trail leads him to a case that extends from Denmark to Africa, from embezzlers to child soldiers, from seemingly petty crime rings to the very darkest of cover-ups.