Undone by the Beast

Hunt or be hunted, that's the rule of Ryan King's world. After stumbling upon his brother's mangled corpse, Ryan's devoted his entire life to vengeance. When he finally closes in on the supernatural killer, he realizes it's not enough. Ryan needs to find a monster of his own in order to take down a psychopathic killer. The last thing he expected is to fall hard for his sexy and lethal monster. Colton Black made one mistake in his youth and has been paying for it ever since.
To save his brother, Colton Turned him into a werewolf, but he never expected his brother to become a bloodthirsty psychopath. When Colton meets one persistent hunter, he didn't count on Ryan being capable of stirring his dead heart awake. Colton's got nothing to lose, until he finds out Ryan's is his fated mate.