As I mentioned in my earlier post ( #5653 ) , it is important to figure out why RJ killed Partridge.  As I was digging RJ episodes, I realized that in last episode ( 22 ) of  last season ( 5 ) , Partridge says that murder of Eileen turner ( Jane's happy memory  ) is bogus and RJ is working through friends and proxies lately. Maybe this is the reason why RJ killed Partridge. Remember   why he killed Jane's family and Panzer ( SJK ) ? 

Another interesting point in this episode ( S06E22 ) , when Jane tells Lisbon about his happy memory, Lisbons also tells hers back , which is her mother feeding piegons.