The Mentalist - Season 3 Episode 10 Jolly Red Elf Let the mind games begin.
Overview: The CBI pursues two lines of investigation when a Santa is murdered: Patrick Jane goes undercover in an AA group; and Rigsby and Van Pelt question members of an authentic Santa society. Meanwhile, following the demise of a person in custody at the CBI, J.J. LaRoche is brought in to question the team when it appears to be an inside job.
Comment
This show takes four or five episodes to establish itself but once all the characters find their place and Simon Baker gets comfortable playing Jane you get utterly absorbed in this world. The mind games Jane plays are intriguing, the continuing Red John theme keeps you guessing and the uncertainty of trust in Jane's motives adds perfect tension. Unfortunately, the expansion and revelation of Red John in the last seasons dilute the quality of the show somewhat.