Point of Ignition by Erin Dutton

Arson investigation is not exactly what firefighter Kate Chambers signed up for. But she doesn't have a choice when an injury forces her off the engine and into the office. Her first case, a fire at a downtown bar, is a clear-cut instance of insurance fraud, or so she thinks. But the property co-owner and prime suspect, Alexi Clark, has spent too many years battling her own demons to quietly go to jail for a crime she didn't commit. Soon Alexi is fighting both the false charges against her and an unexpected attraction to the investigator determined to prove them. Amid a blaze that threatens to consume them both, Kate and Alexi redefine love and trust.