It's been thirteen years since Lucy Sheridan was in Summer River. The last time she visited her aunt Sara, she'd been dragged out of a wild party by the guy she had a crush on. Returning after her aunt's fatal car accident, Lucy learns there was more to the story: Mason Fletcher had saved her from a very nasty crime that night. Now Lucy, a forensic genealogist, and Mason, who has a successful security firm, make a shocking discovery inside Sara's house. A lot has changed in thirteen years. Lucy now works for a private investigation firm as a forensic genealogist, while Mason has quit the police force to run a successful security firm with his brother, though he still knows his way around a wrench when he fills in at his uncle's local hardware store. Even Summer River has changed, from a sleepy farm town into a trendy upscale spot in California's wine country. But Mason is still a protector at heart, a serious (and seriously attractive) man. And when he and Lucy make a shocking discovery inside Sara's house, and some of Tristan's old friends start acting suspicious, Mason's quietly fierce instincts kick into gear.