"Gossip Girl" alum will play the buttoned down sister of Maggie Lawson's character
3.4 million tune in to Rob Lowe as tragic president
The film's least-known lead steals the show in the network's adaptation of Bill O'Reilly's book
The Nat Geo movie will debut Sunday, Nov. 10
Hint: Gossip Girl's voice doesn't necessarily match Gossip Girl's face
In other Showtime news, "The Big C" gets an all-day marathon
"Gossip Girl" star will play a low-level dealer who steps on Nancy Botwin's territory; catfight to ensue?
Celebrating Awards season, "Family Guy" kingpin says he wouldn't tolerate "Two and a Half Men" star's behaviour on his shows; Oscar co-host Anne Hathaway dines...