Psych: Season 5, Episode 4

5 - 4: Chivalry Is Not Dead... But Someone Is

A wealthy widow's young boyfriend falls to his death, which turned out to be the result of poisoning. Lassiter quickly thinks that the widow (Jean Smart) is responsible, but Shawn and Gus believe that the victim was trained to be a con artist by the man (John Michael Higgins) they think is the actual murderer. Shawn takes a different approach than usual to figure it out, but the case takes a turn for him. Meanwhile, Gus attempts to charm an older woman (Lee Garlington).