Oathblood by Mercedes Lackey

This exciting new anthology includes a new novella featuring Mercedes Lackey's most popular heroines, Tarma (one of the sword-sworn and most feared of all warriors) and Kethry (who wields magic and weapons for the greater good), whose fates are suddenly bound together in blood by the powers that control their destinies. Also included in the unique volume is the complete collection of Lackey's short stories about these two brave sisters as they answer the call of their destinies with sword and sorcery!