The Marco Effect (Department Q Series #5)

A teenaged boy on the run propels Detective Carl Mørck into Department Q’s most sinister case yet in the fifth novel in Jussi Adler-Olsen's New York Times bestselling series.
 
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 crimina…