Synopsis: Deaf since birth, Tesa is the perfect ambassador to the alien Grus, whose sonic cries can shatter human ears. But her mission is harder than it looks. The Grus are not alone on their world. They have deadly enemies, both natural and otherwise. And if Tesa is to save all life on the planet, she will have to make peace with not one alien species... but two. (from the back cover of the Ace Books first edition)