Rebel Unicorn by Brogan Thomas

Tru Dennison knows that most of the world thinks she’s a freak; to be fair, as a half-unicorn, half-vampire shifter, she’s one of a kind. To survive, she channels her energy—and her unusual powers—into her undercover role as an assassin. But when she’s accused of a crime she didn’t commit, nothing will stop her from clearing her name… no matter the cost.