One hot murder / Lorraine Bartlett.

Enhanced descriptions from Syndetics:

Where there's smoke...

Katie Bonner, the reluctant manager of Artisans Alley in the quaint shopping district of Victoria Square, is no stranger to ambivalence. Things have been going hot and heavy with pizza maker Andy Rust--so much so that Katie has moved in over his pizza parlor. But now that summer's ushered in a heat wave, an apartment above pizza ovens without an air conditioner is making Katie hot and bothered.

At the height of the heat wave, a tragic fire strikes Victoria Square. Wood U, a small store selling wooden gifts and small furniture, is destroyed. But the fire may just be a smoke screen--for murder. A body is found among the charred wreckage, and the victim didn't die from smoke inhalation. He was shot. Now--despite making Detective Ray Davenport hot under the collar--Katie is determined to smoke out a coldhearted killer...