Sequel to Challenge the DarknessYellowstone Wolves: Book TwoFredrik is back from college and trying to stay out of his power-hungry brother's way, until his brother takes a prisoner for his pleasure. Unable to tolerate his family's cruelty, Fredrik overcomes his fear to help her escape back to her pack. There, he meets Christopher, and their instant attraction tells him Christopher is the one. However, since the threat of his brother remains, Fredrik is reluctant to pursue a relationship. Christopher is still figuring out his place in the pack and has been living on his own to avoid making waves with his brother, Mikael. Now he's met his soulmate, and he'll do anything to take care of his love, including rejoining the pack. With coaxing, Fredrik accepts his feelings, and Christopher's pack gives him the home he's never had. But Fredrick soon realizes he should keep running. His brother is on his tail and will stop at nothing to obtain the power he craves, especially when he realizes the source of the power could be Fredrik himself.