Watch Ashley Greene Fly into 'Pan Am'

By

Despite online rumors to the contrary, Pan Am will complete its scheduled 13 episode run before living in renewal limbo until May, 2012 (when the networks announce their fall schedules).

Hoping to help the show snag some much needed eyeballs is Twilight's Ashley Greene, who kicks off a three episode guest arc with the December 4 episode. "I think [Pan Am is] just very beautifully and well shot. And it's in the 1960s, and I've been wanting to do something like that for a while," she told E!Online.

In the London-based outing, Ted enlists Laura's help to try to make Amanda (played by Greene), an old flame jealous. But things don't go the way he expects.

Watch a sneak peek of Sunday's episode above, which airs at 10 p.m. on ABC!