Spark of Madness by Brynn Ford

The men of Ember Glen purge under the full moon, and it’s my duty to serve their needs.

Neglecting that duty is a sin, and during the last full moon, I became a sinner.
Arlo Rainn witnessed my transgression, and he brought my sins to the authority. He and the other men of the Control chose my fate. All I knew was that I would be punished—maybe put to death. But I never could have imagined the hellish fate chosen for me.
More than that, I never could have imagined the maddening lust that would spark when I became Arlo’s ward.
Our passion is forbidden… and it might just set the world on fire.

*The Ember Glen series follows Mercy and Arlo through their forbidden love in a cult-like community set in a near-future dystopian world.