Sky's Edge. Four Realms, #2

Peace has been shattered in the Four Realms.But Catla Truelock has bigger concerns. Her father's done what he'd been threatening to do. He's arranged her marriage to a man not of Catla's choice. It's the demon way, but Catla knows her new betrothed, and she doesn't like him. He's aloof. He's arrogant. And he's both in spades. Tanyn, the new king of Sky's Edge, feels differently about the half-demon beauty from Night's Fall.
He's made his decision on who he wants to be his queen. She's perfect. He simply has to convince her. Tanyn sets about doing that, but he's interrupted when his fiancée receives a death threat. It's then all the royals of the Four Realms understand that the danger is not over. For reasons unknown, there's a sinister faction in their lands who's targeting them, and the women who will rule at their sides.
Now, Tanyn has to keep his Catla safe, at the same time convincing her to wear his crown. And Catla has to decide if she can leave everything she knows to be the bride of the handsome king in a land that is not her own.