Break the Day by Lara Adrian — book slip

After a shocking betrayal nearly killed him and those he cares about, Breed warrior Rafe is driven by a thirst for revenge against the insidious brotherhood known as Opus Nostrum. To achieve his goal, he must turn his back on the Order and infiltrate a dangerous gang with ties to Opus. Rafe is determined to redeem himself and complete his deep-cover mission, but his desire for Devony Winters, a mysterious beauty among the loyalists, complicates his plans. Devony, a daywalker passing as human, has her own secrets and a personal mission to fulfill. As their paths intertwine, both must navigate their hidden agendas and the growing attraction between them.

For fans of J.R. Ward's vampire world.