Can the peregrine falcon, Fria, who has escaped from captivity, learn to fend for herself in the wild? And can Smiler, desperately anxious that Fria should be all right, solve for himself the problem that has kept him in hiding from the police for so long?

The final book in Victor Canning's classic children's trilogy, which began in The Runaways and continued in Flight of the Grey Goose.