Little Saigon by T. Jefferson Parker

This workmanlike suspense thriller by the author of Laguna Heat takes its name from the populous Vietnamese community in California's Orange County, an intriguing although largely unexplored backdrop for the action. Chuck Frye, a surf bum who has recently failed at journalism, business and marriage, lives in the shadow of his war-hero brother Bennett, and their father, a wealthy real-estate tycoon. Bennett's Vietnamese wife is a singer whose protest music has made her a heroine among anticommunists and Asian expatriates. When she is kidnapped during a performance, Chuck joins the search for her, hoping to end his estrangement from the Frye clan.