Whistleblower (The Office) fourth appearance on the show, after first appearing in "Sabre". Zach Woods made his ninth appearance on the show. While talking with his real estate agent on his cellphone, Dwight states that the office park is 1725 Slough Avenue. "Slough" is a reference to the UK edition of "The Office" which is set in Slough, United Kingdom. In its original American broadcast, "Whistleblower" was viewed by an estimated 6.60 million viewers with a 3.4 rating/10% share in the 18–49 demographic coming second in its timeslot after the season finale of "Grey's Anatomy", receiving the same rating as last week's episode,
The Office (U.S. season 9) "The Office" since the fourth season entry "Fun Run". Ken Kwapis directed the series finale; he also directed the show's pilot episode. While "The Office" was mainly filmed on a studio set at Valley Center Studios in Van Nuys, California, the city of Scranton, Pennsylvania, where the show is set, was also used for shots of the opening theme. Angela Kinsey and Rainn Wilson, during an interview, expressed the hope to film an episode of the season in Scranton. Although this never came to fruition, exterior shots of the real Scranton bar The Bog were featured in the tenth episode