Book One in the Dark Wing series. The zor: from the moment humanity encountered this species, it has been all-out war. For many years the conflicts have been sporadic, usually ending with an Earth concession and a treaty. When the zor mount a surprise attack against human colonies, the normally self-absorbed government of Earth realizes that something must be done before it is too late.
Enter Marais, scholar and student of the zor. With so few options remaining, Marais is put in charge of the battlefleet. Earth may want the threat merely neutralized, but Marais has plans to solve the problem between the species once and for all, even it takes his life to do so.