Trail of the Serpent (S01E20)

S01E01 The Thirty-Year Pin S01E02 The First Day of Forever S01E03 45 Minutes from Home S01E04 Whose Little Boy Are You? S01E05 Tower Beyond Tragedy S01E06 Hall of Mirrors S01E07 Timelock S01E08 In the Midst of Strangers S01E09 The Takers S01E10 The Year of the Locusts S01E11 The Bullet S01E12 Bitter Wine S01E13 A Trout in the Milk S01E14 Deathwatch S01E15 Act of Duty S01E16 The Set-Up S01E17 A Collection of Eagles S01E18 A Room With a View S01E19 Deadline S01E20 Trail of the Serpent S01E21 The House on Hyde Street S01E22 Beyond Vengeance S01E23 The Albatross S01E24 Shattered Image S01E25 The Unicorn S01E26 Legion of the Lost