It was a 12 issue comic book series written by Alan Moore and drawn by Dave Gibbons that was printed by DC comics in 1986.
It's a story about a group of government sanctioned superheroes (though really only one has "super powers") that have been forced out of their activites by the government that no longer needs them.
But there is a murder loose and one of the them actively goes after the murder, causing trouble all on his own because of his violent tatics.
Eventually the whole group is brought back together for one common purpose. One of their own has gone rogue.
It's writing is heavily influenced in the time it was written, during the Cold War, and Alan Moore uses this as the setting and the reason what transpires in the book.
"To alcohol, the cause of and solution to all of life's problems." -- Homer Simpson
"Paradise is feeling warm, when the world is feeling cold." -- Roger Whittaker