FBI - The Federal Bureau of Investigation (FBI) is a real-life federal agency, a division of the Department of Justice based at Pennsylvania Avenue between 9th and 10th Street NW in Washington, D.C. charged with investigating all violations of federal law including espionage, sabotage, kidnapping, bank robbery, civil rights violations and fraud against the government.

• The most popular television adaptation of this agency in the 1960s was the successful ABC series THE F.B.I./1965-74, starring the stylish Efrem Zimbalist, Jr. as the dedicated government investigator Inspector Lewis Erskine.
   

• A few years later TODAY'S F.B.I./ABC/1981-82 starred Mike Connors as agent Ben Slater. In 1991, Pernell Roberts hosted reenactments of real FBI cases on F.B.I.: THE UNTOLD STORY/ABC/1991.
   

• The police drama UNSUB/ABC/1989 featured a Justice Department Behavioral Sciences Unit known as UNSUB, headed by investigator Wes Grayson (David Soul). This government agency used high-tech evidence analysis to establish psychological profiles of "Unknown Subjects" that had committed gruesome crimes.
   

• Ally Walker later starred in a similar show called PROFILER/NBC/1996-2000 with Ally Walker as Samantha Water am FBI Profiler on the trail of a serial killer known as "Jack."
   

• Perhaps the most popular FBI agents appeared in the 1990s, when Oxford educated FBI agent Fox "Spooky" Mulder (David Duchovny) teamed with forensic physician Dana Scully (Gillian Anderson) to investigate special paranormal case files labeled "X-Files" on the fantasy drama THE X-FILES/FOX/1993-2002.