The first promo for "Fringe" season 4 has been dropped online, keeping the mystery in the season 3 finale alive. It uses footage from the fourth episode of season 1 which sees Peter telling Olivia, "There are things happening here that I can't even begin to explain. And I am not going anywhere until I can."
The clip then gets blurry and features flashes of other major moments before the screen turns to black. Later, the title card which is written in backwards asks, "Where Is Peter Bishop?" It matches the last season cliffhanger that leaves question about Peter's existence.
The fourth season of "Fringe" will debut Friday, September 23 at 9/8c on FOX. The network will bring the show to San Diego Comic Con on Saturday, July 23. The sci-fi series recently got Outstanding Drama Series nomination at upcoming Emmy Awards, battling it out with the likes of "Boardwalk Empire", "Dexter, "Mad Men" and "Game of Thrones".