Based on the highly celebrated graphic novel of the same name, Watchmen is the latest creation of Zack Snyder - the man behind 300 and Dawn of the Dead.
Watchmen follows a vigilante named Rorshach who begins an investigation into the murder of an ex-superhero is murdered. This begins to lead to a much more terrifying conclusion.
When the Watchmen teaser trailer was released earlier this year, it became one of the most talked about film trailers of all time on the internet.
Watch the second trailer.