Jane comes face to face with Red John on The Mentalist season finale. What else do you even need to know in order to tune in?
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The Mentalist Season 3 Episode 23 Quotes

Frankly, this is less thrilling than you advertised and possibly wrong.

Lisbon

Jane: If Director Bertram wanted a CBi presence to jump off a cliff would you and your CBI presence jump off that cliff?
Lisbon: If there was overtime, sure.