The Athena Corps (Hunters of the Dark #7)

Agent Ross will stop at nothing to track down Krystal and The Athena Corps. But Ross has been exposed to the hunters under her command, and Natalia and Brett struggle with what to do with the information at the same time as they must confront truths about themselves that have come to light. Meanwhile, a series of events draws the hunters closer to a confrontation in Japan, where mysterious experiments could have dire consequences for everyone.