The Inconstant Moon — Alaya Johnson

Under the pull of the moon, flappers can turn into animals, vampires can turn into lovers…and maybe a young woman can discover a side of herself she never knew existed. Zephyr Hollis tries to fit in as a vampire-hunting Defender in New York City, but the morality of killing suckers gets murky once you've gone dancing with one. The twenties roar in this prequel to the novels Moonshine and Wicked City.