The second season of The Mentalist premiered on September 24, 2009, and concluded in May 2010.

The second season of The Mentalist premiered in the United Kingdom on FIVE on Friday, February 19, 2010 at 9:00 pm.

The series premiered on February 19, 2010, and concluded on July 23, 2010.

The most watched episode of the season was Red Menace (3.17 million viewers), and the least watched was Aingavite Baa (2.09 million viewers), although the latter was broadcast at the later time of 10pm.

[25] All 23 episodes were released on the five disc complete second season set.