Pretty Gwynn Elston visits Perry Mason to say she's afraid for her life. What a mess - she's staying at the home of her old friend, Nell, and Nell's new husband, Felting Grimes. Meanwhile, through her work, Gwynn discovers Felting has another wife and young son, age seven! Her friend Nell suspects nothing, but Felting has discovered Gwynn knows his secret, so she's sure he's trying to kill her. The next day, the already complicated situation takes a further bizarre twist when Gwynn finds Felting's body with a bullet through his head. So wouldn't you just know it, the police lock her up since she's their only suspect! Join ace detective Paul Drake and lovely secretary Della Street as they help Perry Mason unravel THE CASE OF THE BIGAMOUS SPOUSE