#1 New York Times bestselling author of The Selection series Kiera Cass is back with her most epic novel yet - a sweeping enemies-to-lovers standalone romance. 'Love has a sound. It sounds like a thousand heartbeats happening at the same time.' Annika has lived a life of comfort and luxury as the Princess of Kadier-but now; after the death of her mother; she's weighted under the looming threat of a loveless marriage arranged by her cold father. Far outside the palace walls; on the outskirts of the land Annika's family has long ruled over; Lennox is waiting for his moment. His people displaced; his father gone; Lennox knows that it's up to him to lead his people into a battle to overthrow the Kadierian monarchy. After Annika and Lennox's worlds collide; they can't stop thinking of each other. Annika has waited her whole life to find out what love truly feels like-but could it be that she's found love with someone she can never have?