2001-2002 : original_airing_season_finale : May 16, 2002 | 2 : episodes : 23 | 2 : original_airing_tv_season : 2001-2002 | 2001-2002 : original_airing_season_premiere : September 27, 2001
CSI in season 2 had 23 episodes, starting in September 27 2001 and the season finale on May 16 2002.