Dear Matilda, I wrote. I let the words flow for her. And when the ink dried, I gave my very heart to the fire. Born in the firelit domain of the under realm, Matilda is the youngest goddess of her clan, blessed with humble messenger magic she uses to carry words and letters through the realms. But the gods will kill for power, and Matilda holds a secret she must hide from even her dearest allies. And there is a mortal who dreams of her, though they have never met in the waking world. Ten years ago, Vincent of Beckett wrote to Matilda on the darkest night of his life—begging the goddess he befriended in dreams to help him. His request went unanswered, and Vincent became a hardened, irreverent lord of the river who has long forgotten Matilda . . . until she comes tumbling into his bedroom window with a letter for him.