**THE INSPIRATION FOR MAJOR NETFLIX SERIES DEPT. Q, STARRING MATTHEW GOODE!**The third book in Jussi Adler-Olsen's internationally bestselling Department Q series. __________A letter in blood, a horrifying disappearance. . . Two boys, brothers, wake up tied and bound in a boathouse by the sea. Their kidnapper has gone, but he'll be back. They cannot escape . . .In the cold cases division Carl M rck has received a bottle.It holds an old and decayed message, written in blood. It is a cry for help from two boys. Is it real? Who are they and why weren't they reported missing? Can they possibly still be alive?He needs to find out, and fast . . . Praise for Adler-Olsen:'The new "e;it"e; boy of Nordic Noir' The Times'Engrossing' Sunday Express'Adler-Olsen's fascination with abnormal psychology once again pays off' Sunday Times