"If you want justice... you've come to the wrong place." So says a chained Tyrion (Peter Dinklage) in a new trailer for the upcoming fourth season of "Game of Thrones" that emphasizes the many wrongs the surviving characters have faced and intend to answer in kind. You've also got a white walker in there and a brief glimpse of a dragon. The fourth season of the fantasy saga premieres on HBO on April 6th at 9PM -- check out the trailer below.