Firefly by Henry Porter

From the refugee camps of Greece to the mountains of Macedonia, a thirteen-year-old boy is making his way to Germany and to safety. Codenamed “Firefly,” he holds vital intelligence: unparalleled insight into a vicious ISIS terror cell, and details of their plans. When MI6 become aware of Firefly and what he knows, the race is on to find him. Starting at $7.66 from Amazon / Kobo / Google Play /