The Legend Of Smuggler's Cave: The Legend of Smuggler's Cave / Primal Instinct (Bitterwood P.D., Book 6) by Paula Graves
THE LEGEND OF SMUGGLER'S CAVE
Prosecutor Dalton Hale is convinced gorgeous widow Briar has information that can help him take down a local crime organisation. So to keep Briar and her son safe he moves them into his home. But, when her son is kidnapped, Dalton will do anything to get him back and make them a real family - even put his own life on the line!
PRIMAL INSTINCT
Adrienne Jeffries has a talent for getting inside San Francisco's most dangerous minds, so when FBI agent Conner Perigo enlists her help to hunt down a serial killer she can't say no. Unprepared for the powerful attraction that blossoms between them, Adrienne and Conner must work together to find the next victim - before the killer does.