Laeca, Lady of Thermanae, missed out on the incredible good looks that bless the rest of her family—not to mention the talent for healing and sex-magic. What she has is determination, pride, honor, and an unwavering dedication to the land and people of Thermanae. All its people, both human and satyr. She can't remember the last time she let herself have fun. Sex is something that happens on the erotically charged Soranian holy days—if she actually has time to attend the festivals. When a sick satyr collapses at her feet on Midwinter's Day, Laeca realizes she'll be passing on the yet another festival in order to nurse him, hoping common sense and herb tea will make up for lack of healing magic. But when she realizes Kallios is at death's door because he wants to follow his murdered beloved, she makes a vow on her family honor to save him. By any means necessary. Including by restoring his will to live by reminding him how much fun sex is. In the Soranian Empire, though, vows made on holy days have unexpected consequences. Or maybe Kallios' dead lover's ghost understands what the living need better than they do. Before the Longest Night is done, Laeca will find her magic and risk her life. Kallios will learn his dead lover isn't necessarily gone. And all of them, including the dead man, will be changed by the powers of love, magic and the Longest Night.