Doctor Asher Jardine turned her back on a lucrative career and spent her inheritance on revamping an old ambulance, taking health care to the community to those too afraid to venture into an office. It took almost a year for her to gain the trust of the menagerie of homeless and helpless she serves. But lately, there's been a sinister feel to the streets she uses as her clinic.

Injured Australian Defense Force Investigator, Mitchell Buchanan, is seconded to the Sentinel Bureau. On the surface, the agency helps returned soldiers transition back into society. Their actual mission is to pursue soldiers who've crossed the line. His assignment to locate a suspected member of a deadly smuggling gang finds him cozying up to the guy's sister.

When violence around Asher ramps up and she's attacked, Mitch becomes her protector while still pursuing his objective. Their growing respect and attraction for one another are muddying the waters. So are the secrets he keeps. Someone is hellbent on getting to her, and if they don't find the answers soon, they may not survive the fallout.

And it's looking more and more like that person is closer to home than they feared...