Looks like some friendly Russians cracked the 2007 version. Apparently this is a version from before development on Episode 3 started.
Source Engine leaked/stolen. Again.
This edit will also create new pages on Giant Bomb for:Beware, you are proposing to add brand new pages to the wiki along with your edits. Make sure this is what you intended. This will likely increase the time it takes for your changes to go live.