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. Shortlisted for the Branford Boase Award.