"Teen Wolf" fans got a big surprise today at the San Diego Comic-Con.

At the show's panel, MTV that the series has been greenlit for a two-part, 20-episode fifth season.  

This is the fifth consecutive year that the show appeared at San Diego. Cast members Tyler Posey, Dylan O’Brien, Tyler Hoechlin, Holland Roden, and newcomers Shelley Hennig and Dylan Sprayberry were joined by Executive Producer Jeff Davis for the panel and Q & A session.

The fourth season debuted on June 23. No premiere date has yet been set for the fifth season.

Dave Lewis has been a Los Angeles-based entertainment writer and editor for nearly ten years. Originally hailing from Minneapolis, he moved to L.A. in 1996 to attend USC, before working for various periodicals and web sites including a lengthy stint at Variety.com. He joined the HitFix staff in 2011.