Ezra Kleinfelter is in the back of a cab writing an email that reveals government secrets. His credit card is declined and he notices government agents outside. He sends the email and rushes out of the cab. The cab driver, angry because of the unpaid fare, yells to the agents and points out where the man headed...Read the full recap
(Watson picks the lock to the apartment where they expect to find a federally wanted criminal.)
Sherlock: Before you throw the last tumbler, you might want to pause to consider the beauty of this moment. We are about to succeed where the combined wits of a dozen or so federal agencies have failed. Remind me again what closeted trivial things our lives are.
(Sherlock's heated online debate leads him to hand Joan his computer to get a break, but he can't help himself.)
Sherlock: Are governments capable of evil? Yes, of course they are. All institutions are, but they are more capable of incompetence. (Sherlock stops pacing) That's good, I should post that. (Takes his computer from Watson.)
The collective of internet hackers, "Everyone", is based off of the real collective of hackers known as "Anonymous". The two share the interest in freedom of information, the premise that there is no leadership of the group, and the fact that the members are supposed to be as anonymous as possible. The real world version is the group that "Occupy Wall Street" started from.
The book that Kleinfelter left in the apartment was Ayn Rand's The Fountainhead.