Watch Elementary Season 2 Episode 21 online via TV Fanatic with over 5 options to watch the Elementary S2E21 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, and Google Play.
|YouTube Purchase||Watch Now|
|Google Play||Watch Now|
A missing person case sends Sherlock and Joan into the world of unmanned aeronautics and Sherlock's brother Mycroft makes an unexpected return on Elementary.