At Sun's Rising — Michelle O'Leary

Tycho, a cleric in the Order of the White Sun, is a scientist, not a spy, yet he agrees to go undercover in a secret lab owned by criminal mastermind Webster Griffin. His only contact with the outside world is Nadya, a cleric from the Blue Order, an experienced operative—and a sensual temptation.Nadya is delightfully drawn to her new partner, but she can't afford distractions. She has to support him and pass his findings along to her superiors...without getting them both killed. Will they uncover Griffin's secrets or become more victims in his bloody rise to domination?