The Dark Knight Rises Viral Campaign Unlocked New Trailer Dave Pehrson April 30, 2012 Entertainment, The Dark Knight Rises, Video A new world wide marketing campaign took place where Batman fans were taken on the hunt for a symbol, a bat symbol. Every time this symbol was found, fans tweeted the picture of it only to reveal another footage of the new, and possible last, trailer for The Dark Knight Rises. It was said that this trailer would be revealed with the upcoming movie, The Avengers, but it looks like the viral marketing campaign changed those rumors. After a long day, fans from around the world has unlocked the trailer. You can also watch it directly from the viral marketing site, tdkr07202012.com/.