A series of murders in San Francisco bearing the tell-tale signs of the infamous Zodiac Killer have the BAU wondering if the notorious serial killer has returned. Also, Reid ponders if he should be doing more with his genius abilities.
When a colleague's murder sends shockwaves through the team, Gibbs uncovers a surprising link to the crime.
Judge Carter Addison (Dick Van Dyke) kills his mistress then presides over the murder trial as Matlock tries to defend a framed man.
Alex escorts a pretty socialite to a dance at her country club.
Jerry is intimidated by Mr. Pitt's doorman.