“There are things happening here that I can’t even begin to explain, and I am not going anywhere until I can,” says Peter in this cryptic teaser for the upcoming fourth season of the cult sci-fi hit Fringe. Gotta love the FOX Broadcasting marketing team. There are a couple of things you should note after watching this tease. All of these scenes embedded in it come from previously aired Fringe episodes. The words that Peter speaks to Olivia were said in the season one episode “The Arrival.” That’s the one where we got our first glimpse into the lead Observer named September. The myriad of scenes that flash in front of your eyes following the season one clip mostly come from the latest season; if you’re adept at pausing and playing the YouTube video at appropriate moments you should find stills of Peter’s grave, Peter talking to Walter, Peter kissing Olivia, and the machine. It all leads up to (spoiler alert) the season three cliffhanger where the Observers are all standing around the Statue of Liberty and confirming Peter’s removal from existence. Also, sprinkled throughout the mysterious montage is an enlarged and inverted number 4 (to signify season 4?) and the hashtag #WhereIsPeter(?)Bishop. There’s a reason why the teaser is titled “?”–there’s hardly much to glean from it that could provide clues to the whereabouts of Peter. And yet I can’t stop watching it.

Fringe returns Friday, September 23 at 9PM on FOX.