Question: how many episodes in person of interest season 2
Answer: Season Episodes Originally aired First aired Last aired 23 September 22 , 2011 ( 2011 - 09 - 22 ) May 17 , 2012 ( 2012 - 05 - 17 ) 22 September 27 , 2012 ( 2012 - 09 - 27 ) May 9 , 2013 ( 2013 - 05 - 09 ) 23 September 24 , 2013 ( 2013 - 09 - 24 ) May 13 , 2014 ( 2014 - 05 - 13 ) 22 September 23 , 2014 ( 2014 - 09 - 23 ) May 5 , 2015 ( 2015 - 05 - 05 ) 5 13 May 3 , 2016 ( 2016 - 05 - 03 ) June 21 , 2016 ( 2016 - 06 - 21 )