The Mentalist Season 1 Episode 20 airs after 3 week on Tuesday, April, 28 In this episode Patrick Jane continues his nontraditional approach toward people, he went golf course for meeting with a mobster but he face gun again him. Watch The Mentalist season 1 episode 20 (s01e20): Are you ready to watch The Mentalist season 1 this week? In this episode 20, Jane and the CBI set out to determine who is responsible for the Mob-style execution of a man in the Witness Protection Program.The Mentalist season 1 episode 20 is entitled “Red Sauce“. This episode will air on April 29,2009. Mark it on your calendar, so you won’t miss it. Hope this post was a help guys, make sure you watch The Mentalist s01e20. Enjoy everyone!