'NCIS: LA' casts 'Gossip Girl' alum Michelle Trachtenberg as guest starAdd to Favorites | NCIS: Los Angeles
This "Gossip Girl" alum is leaving New York for Los Angeles.
Trachtenberg, best known for her roles on "Gossip Girl" and "Buffy the Vampire Slayer," will play Lily, a charming and physically capable environmentalist and private chef. When a scary home invasion turns her life upside down, she does her best to show a brave face, despite dangerous and uncertain circumstances.
The holiday-themed episode is set to air Tuesday, Dec. 17 at 9 p.m. ET on CBS.