Abigail "Abby" Sciuto is a fictional character from the NCIS television series on CBS Television, and is portrayed by Pauley Perrette. In a Season 10 episode entitled "Hit and Run", a young Abby was played by Brighton Sharbino in flashbacks. Like Jethro Gibbs, Anthony DiNozzo, and Dr. Donald Mallard, Abby was first introduced in the episodes "Ice Queen" and "Meltdown" in the television show JAG, and has appeared in every episode of NCIS, in addition to being featured on the show's spin-offs, NCIS: Los Angeles NCIS: New Orleans. The role has made Perrette the most popular actress on U.S. primetime television in 2011, according to Q Score. Abby Sciuto is a forensic scientist at the Naval Criminal Investigative Service headquarters at the Washington Naval Yard, with expertise in ballistics, digital forensics, and DNA analysis. In the first episode of the seventh season, "Truth or Consequences", DiNozzo, while under the influence of a truth serum, describes her as "a paradox wrapped in an oxymoron smothered in contradictions in terms. Sleeps in a coffin. Really, the happiest goth you'll ever meet."