Elementary s2e1 Step Nine s2e10 Tremors s2e11 Internal Audit s2e12 The Diabolical Kind s2e13 All in the Family s2e14 Dead Clade Walking s2e15 Corpse de Ballet s2e16 The One Percent Solution s2e17 Ears to You s2e18 The Hound of the Cancer Cells s2e19 The Many Mouths of Aaron Colville s2e2 Solve for X s2e20 No Lack of Void s2e21 The Man with the Twisted Lip s2e22 Paint It Black s2e23 Art in the Blood s2e24 The Grand Experiment s2e3 We Are Everyone s2e4 Poison Pen s2e5 Ancient History s2e6 An Unnatural Arrangement s2e7 The Marchioness s2e8 Blood Is Thicker s2e9 On the Line