In the aftermath of the war in Vietnam, thousands of desperate refugees fled the killing fields for new lives in Southern California. But for those who settled in "Little Saigon, " the war never really ended. The latest victim of the continuing struggle is Li Frye, a popular singer whose songs of hope and home have made her a heroine to her people. Ripped from the stage by masked gunmen, she has vanished into the dark alleys of Little Saigon, where outsiders are met with suspicion and a stony silence as impenetrable as the steaming jungles of Vietnam.