The Calculus Affair (2) (S01E13)

S01E01 The Crab with the Golden Claws (1) S01E01 Detective Work S01E02 The Crab with the Golden Claws (2) S01E02 Second Opinions S01E03 The Secret of the Unicorn (1) S01E04 The Secret of the Unicorn (2) S01E04 Looking for a Village S01E05 Red Rackham's Treasure S01E05 A Question of Trust S01E06 Cigars of the Pharaoh (1) S01E07 Cigars of the Pharaoh (2) S01E08 The Blue Lotus (1) S01E09 The Blue Lotus (2) S01E10 The Black Island (1) S01E11 The Black Island (2) S01E12 The Calculus Affair (1) S01E13 The Calculus Affair (2)