Lo Chen, the maker of such elegant romances as Shepherd Girl and The Joy Of Spring, takes a hard right turn into hard-boiled mystery. Ivy Ling Po, star of The Love Eterne as well as A Cause To Kill, plays the dedicated wife of a man being blackmailed for an illicit love affair, who uncovers a pit of deceit, double-crosses, extortion and murder after murder. (IVL)