Deacon by Faith Gibson

Deacon Wright, a Gargoyle with a heart as large as his body, feels too much of everything. He doesn’t believe he’s good enough for his mate. She’s beautiful as well as smart, and she deserves more than a commoner who works as assistant warden at the Penitentiary.
Sabrina Bailey is the oncologist treating one of the Stone Society’s own. She has devoted her life to saving others, and her career is all she has. A past relationship ended traumatically, making her leery of trying again. Unable to avoid the pull she feels for Deacon, the handsome man visiting her patient, she lets her guard down and agrees to one date.
Someone begins stalking Sabrina, leaving her cryptic notes, and she suddenly finds herself protected by Deacon and his Clan. Close proximity has the two falling fast as they work to figure out the clues being left by a stranger.
Meanwhile, Drago is amping up efforts to build an army in America to fight the Stone Society by chemically altering the Unholy.