In the Heat of the Night — Susanne Bellamy

Fire Captain, Kel Jones, suspects an arsonist is active in his town of Bindarra Creek. But he's distracted by his newest recruit, petite Greek goddess, Thalia of the divine-baklava.
When a callout to an accident gives him his first break in the case, he's shocked when the investigation throws up an unexpected suspect. Sparks fly as the search for truth pits him against his newest recruit.