Synopsis by Hal Erickson
William Shatner delivers a bravura performance as septugenarian hoodlum Thomas Kroll. In order to solve a 34-year-old mob murder for which Kroll was responsible, the IMF has to stage a meticulous re-enactment of the crime. The easy part is constructing a realistic replica of a 1937 Chicago neighborhood (actually the familiar Paramount Pictures backlot); the hard part is convincing Kroll that he is nearly four decades younger! Stephen Elliot makes his final Mission: Impossible appearance as IMF agent Dr. Dougl Lane, here posing as Kroll's victim. First telecast September 25, 1971, "Encore" was written by Harold Livingston.