Their love will either unite their peoples or tear them apart forever. Marina is willing to play the part of Caspian’s mate and betrothed, both to give her time to learn the history of the siren people and because of her true feelings for the Siren King. A truth that Caspian doesn’t yet know. Or so she thinks. But Caspian knows that they will both have to face their feelings to end the centuries-long feud that tore apart their people, and he will do whatever it takes to force fate to let them be together. Hymn of Breath and Bone is the stunning conclusion to the Whispering Sea Duet, and enemies to lovers romantasy featuring sirens, selkies, and spicy romance.