"Under Covers" is the 8th episode of the third season of the American police procedural drama NCIS, and the 54th episode overall. It originally aired on CBS in the United States on November 8, 2005. The episode is written by Lee David Zlotoff and directed by Aaron Lipstadt, and was seen live by 17.79 million viewers.Several recurring characters appear, including FBI Agent Tobias Fornell (Joe Spano) and lab assistant Charles "Chip" Sterling (Michael Bellisario).