Disc one: Step nine ; Solve for X ; We are everyone ; Poison pen ; Special feature -- Disc two: Ancient history ; An unnatural arrangement ; The marchioness ; Blood is thicker ; Special feature -- Disc three: On the line ; Tremors ; Internal audit ; The diabolical kind -- Disc four: All in the family ; Dead Clade walking ; Corpse de ballet ; The one percent solution -- Disc five: Ears to you ; The hound of the cancer cells ; The many mouths of Aaron Colville ; No lack of void ; Special features -- Disc six: The man with the twisted lip ; Paint it black ; Art in the blood ; The grand experiment ; Special features.