`Better Call Saul` begins unwrapping the final layers of its mystery
(CNN.com Entertainment)

This week brings a second season of `Russian Doll,` but in a sense, the true TV version of a Russian nesting doll is `Better Call Saul,` deftly adding one more layer each year as it has approached the outer shell that was `Breaking Bad.` The beginning of the final season brings the AMC series a few steps closer to its endgame, with tantalizing clues but scant clarity about these final pieces.