Elementary 2x8 Blood Is Thicker Season 2 Season 1 24 EpisodesSeason 2 24 EpisodesSeason 3 24 EpisodesSeason 4 24 EpisodesSeason 5 24 EpisodesSeason 6 21 EpisodesSeason 7 13 Episodes 2x1 - Step Nine 2x2 - Solve for X 2x3 - We Are Everyone 2x4 - Poison Pen 2x5 - Ancient History 2x6 - An Unnatural Arrangement 2x7 - The Marchioness 2x8 - Blood Is Thicker 2x9 - On The Line 2x10 - Tremors 2x11 - Internal Audit 2x12 - The Diabolical Kind 2x13 - All in the Family 2x14 - Dead Clade Walking 2x15 - Corpse de Ballet 2x16 - The One Percent Solution 2x17 - Ears to You 2x18 - The Hound of the Cancer Cells 2x19 - The Many Mouths of Aaron Colville 2x20 - No Lack of Void 2x21 - The Man With the Twisted Lip 2x22 - Paint It Black 2x23 - Art in the Blood 2x24 - The Grand Experiment When a beautiful young woman is murdered, Holmes and Watson investigate her ties to a billionaire CEO. Meanwhile, Mycroft makes a case for Sherlock to move back to London.