From USA Today Bestseller Robert D. Armstrong comes the finale to Harcan’s sci-fi adventure, Castle in the Cosmos.Call of the wild...Harcan had proven himself as leader of the pack. But in the thrilling conclusion of the Wolfsbane series, he and his crew will come face to face with an evil unlike anything they’ve seen before. In the deep reaches of space, the secrets of the galaxy’s apex predators await in the castle in the cosmos...The Wolfsbane series is a three-book sci-fi adventure...Book 1: The Badlands BountyBook 2: Remy’s RejectsBook 3: Castle in the CosmosFans of gritty sci-fi stories, bounty hunters, and off-world colonies may like this series.