Important things will happen in the next episodes :

EP 3:
Jane gets the CBI involved in a case in Napa in order to focus on Sheriff McAllister , while Van Pelt and Rigsby take a trip down the aisle.

EP 4:
- Jane reveals that a list of fake Red John suspects he planted was stolen and the team realizes these men are in danger.
- Jane discovers the reason why Brett Partridge was murdered by Red John, as well as the importance of the line "Tyger Tyger".
-  Robert Kirkland, and  Reede Smith will be shown in this episode .

EP 6:
This episode revolves around the cult group Visualize, confirmed by twitter pictures of actors. Malcolm McDowell returns as Bret Stiles.We apparently learn much more about Visualize's deeper connection with Red John, and whether Bret Stiles knows who Red John is, or is Red John himself. 

Source :http://thementalist.wikia.com/wiki