A dangerous new player in Lexington puts Raylan on a collision course with a Dixie Mafia hitman; Ava takes over Boyd's business while he is back in jail.
Kate surprises Toby at work; Kevin and Randall attend a fundraiser for Sophie's hospital; Jack takes the boys on a camping trip, leaving Rebecca to deal with some unexpected news.
When the team is called to investigate human remains found in a convention center owner's bathtub, Sara and Grissom use the case to get close to attorney Anson Wix's star forensic expert witness, just days before David Hodges' trial begins.
Former team member Catherine Willows comes back to help investgiate a cold case that has haunted the CSIs.