Masterpiece Mystery!

Miss Marple: Series IV: They Do It With Mirrors (2x8)

Air date: Jul 19, 2009

Miss Marple is requested to help her old friend Carrie-Louise, the loving wife of benign philanthropist Lewis Serrocold. Carrie-Louise is slowly poisoned by an unknown hand,and her husband and her sister Ruth want absolutely to save her from this dark menace.