After the team's Green Lanterns use their mastery over fear to help the rest of the Justice League, they must face an even greater threat: An unknown villain who's hacking into the Justice League's computers, causing the Batcave's weapons and security systems to turn against the Dark Knight and the Watchtower satellite to plummet to Earth - with Cyborg trapped on board! Collects JUSTICE LEAGUE #6-11. "(W) Bryan Hitch (A) Matthew Clark & Various (CA) Tony S. Daniel, Sandu Florea"