Elementary Episode 2.03 We Are Everyone

After leaking secrets, a government operative, Ezra, is on the run and a mysterious man hires Sherlock and Joan to locate him. Questioning the mysterious man's motives leads Sherlock to learn that he's part of an organization gunning for Ezra. Connecting Ezra with "Everyone," a group of cyber-activists, Sherlock discovers the identity of the girl harboring Ezra, but they find her dead at her apartment and know Ezra killer her. Sherlock steals a guard's phone, but "Everyone" traces it to Sherlock and Joan and wreak havoc on their digital lives. Sherlock catches up to Ezra as he tries to leave the country on a plane owned by a member of "Everyone." Ezra reveals he can expose US spies throughout the globe and is forced to let him go. Sherlock comes up with a plan to capture Ezra and keep the identities of the spies a secret. Meanwhile, Joan signs up for an online dating site and uses the opportunity to chastise Sherlock for his lack of meaningful relationships.