The Thief Who Went To War — Michael McClung

After barely surviving the attentions of the Knife That Parts the Night, Amra and Holgren are determined to end the threat posed by the remaining sentient, powerful Blades of the Eightfold Goddess. They are willing to risk everything to win their secret war, but can they succeed when their adversaries are cunning, powerful beyond measure, and utterly ruthless?

And even if they can, what will it cost them?