Robert Loggia was at his best in this tale of a maverick FBI agent. Old and set in his ways, he was much more interested in seeing justice done than he was in meeting all of the Bureau's latest paperwork requirements or in playing the political games that were expected, especially of Special Agents assigned so close to the Bureau's Washington, D.C. headquarters. Nick Mancuso was what you want a TV cop (and real ones, for that matter) to be, hardworking, dedicated to the truth, and very bright, with a willingness to "let the chips fall where they may". The character had been in the miniseries "Favorite Son" which was shown on NBC the fall before Mancuso, F.B.I. came on. While the show was not renewed for a second season, NBC thought enough of it to rerun what they thought were the best episodes in the summertime four years later.