March 03, 2009 at 12:00 PM EST

Audible gasps.

That’s what eyewitnesses heard at Sunday’s Sarah Connor Chronicles event at San Francisco WonderCon during a screening of the show’s new three-plus-minute trailer. In addition to wall-to-wall Summer Glau, the action-packed highlight reel — assembled exclusively for the 3,500 fans in attendance by executive producer Josh Friedman — features significant spoilers from this season’s final six episodes. And the best part? I just got my hands on the red-hot video and it’s embedded below!

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