When Tim discovers an abandoned dog, he has no idea what he is letting himself in for. A thrill-ride for middle-grade readers, packed with spies, helicopters, and a dramatic dash across an international border.

What would you do if you found a dog in the street? Would you return him to his owners? Even if they were a thousand miles away – and in prison? Tim finds a stray dog on the way home from school, but his parents refuse to let it into their house. He knows what he has to do. He catches a plane to Eastern Europe...Tim will have to break into a high-security prison, pilot a helicopter and make a nail-biting run for the border – all for a dog called Grk.