Murphy Brown (1988)

S9E16 You Don't Know Jackal

Kay questions the reliability of Murphy's informant and insists on meeting him. To protect the source's identity, Murphy and Frank agree to employ a decoy. However, they both end up hiring someone for the role. The impersonator Frank recruits, a clerk from a video store, jumps at the chance to be on TV and informs Kay that he will pose as the informant on the show.