The fourth season of the CBS police procedural series The Mentalist premiered on September 22, 2011 and concluded on May 17, 2012.

The season picks up immediately after the events of the third-season finale in which Patrick Jane (Simon Baker) was arrested for the public murder of the man he believes is the notorious serial killer Red John, who murdered his wife and daughter.

There was a great deal of plot and story that you could follow through the whole season.

"[48] He commented that the new season would explore Jane's feelings about finally catching his "white whale", Red John: "What does revenge mean?

"[48] All 24 episodes were included in the five disc complete fourth season set.