Another new promo video for season three of angsty mutants showHeroes went online recently, and it includes at least one character that you might have thought was dead after season two. But it also may contain the key to finding out one of the biggest mysteries from the last season: who shot flying politician Nathan Petrelli? Spoilers ahead.

Fans have already gone through the video frame by frame, and they think they've spotted the shooter in the baseball hat: Nathan's brother Peter. Has Peter gone over to the dark side? Or was this a concerted plan between the Petrelli brothers? Or is this just an unrelated baseball-hat moment?

BTW, we debated whether it was a "spoiler" to mention that Nathan got shot. But we think the statute of limitations has run out on this one. Feel free to disagree in the comments. [Heroes Spoilers]

Send an email to Charlie Jane Anders, the author of this post, at charliejane@io9.com.