About Elementary Season 3, Episode 19 : One Watson, One Holmes

Holmes and Watson find themselves in the middle of a civil war being fought on the Internet when a member of Everyone, the anonymous hacker group they periodically work with, is murdered. Guest Stars: Joseph Cross, Adam Chanler-Berat, Roslyn Ruff, Susan Pourfar, Lucy Owen, Will Pullen, Erik Heger, Gretchen Hall, Alicia Harding, Steve Routman,