She's a Dog now--a full-fledged member of the Provost's Guard, dedicated to keeping peace in Tortall. But there's unrest throughout land. Counterfeit coins are turning up in shops all over the capital city of Corus, and the nation's economy is on the brink of collapse.

The Dogs discover that the counterfeit money seems to originate in Port Caynn. So Beka heads upriver to investigate, traveling with her mentor, Goodwin; Achoo, a hound whose nose is as sharp as her claws; and the pigeon Slapper, who carries the voices of...