Lassiter is determined to be appointed Chief of Police, so he sets out to prove himself deserving of the job by solving the murder of the mayor's beloved uncle, Archie Baxter, who was killed back in the 60s, although the case was never solved. Meanwhile, Juliet receives some news that tests her relationship with Shawn.

After years of trying, Shawn and Gus are finally invited to be panelists at the Cutting Edge Consultants Convention hosted by Professor Bob Stein, a Paranormal Forensics Expert, but things go awry when a murder occurs. Meanwhile, Lassiter is trying his best to be rid of his new head detective, Betsy Brannigan, who he intensely dislikes.