Pilot Season: Rachael Taylor to Star Opposite Dork Annable in ABC's 666 Park Avenue

Sebastian Stan is diving lower the rabbit hole on Not so long ago and TVGuide.com has got the start looking at his turn as Alice and Wonderland's Mad Hatter. Not so long ago Scoop: Sebastian Stan's Mad role revealed As TVGuide.com first reported, the Captain America and Gossip Girl alum will guest-star around the ABC story book drama. He'll come in the Wonderland-designed episode "Hat Trick," airing March 25, by which we'll find out how the Mad Hatter grew to become mad. Browse the Mad Hatter's transition into madness, and try to discover the major Wonderland Easter time egg: Find Out More > Other Links From TVGuide.com Sebastian StanGossip GirlOnce Upon a TimeCaptain America: The Very First Avenger