Julia McKenzie's intrepid armchair detective Miss Jane Marple returns to Masterpiece Mystery this Sunday evening with the first of two brand-new installments of Marple that are bound to delight connoisseurs of crime. The two spellbinding installments, "The Mystery of Chimneys" and "The Blue Geranium" follow last month's "The Mirror Crack’d From Side to Side," which kicked off a new collection of Six By Agatha , Masterpiece Mystery 's pod of Agatha Christie-based programming that includes three installments of Marple and three of Poirot , including an adaptation of Christie's classic potboiler, "Murder on the Orient Express." Here, McKenzie returns as Miss Marple, the elderly spinster whose kindly exterior belies the rapier wit of a first rate detective... and who finds herself often crossing paths with murder itself, whether it be in amid the hedgerows of a postcard-perfect English village or in the faded ballroom of an ornate ...