June 19, 2008
Whysoserious.com/laughtilithurts/static.htm was linked to after solving the game at Whysoserious.com/laughtilithurts. It contained a Acme Security Systems video feed (CAM 4131) of Dock 138 at Gotham harbor on 6/16/08, 03:02:03:87 to 03:02:18:57.
The third episode of Gotham Tonight (6/23) revealed that a large shipment of ammonium nitrate had been stolen off the docks 7 days before, and that the perpetrator was "crazy enough to smile into the surveillance camera." From this information, it can be concluded that the Joker was the thief, and that he likely procured enough ammonium to make a substantial amount of bombs to use later during his terrorist rampage.