The ninth and final season of CSI: NY originally aired on CBS between September 2012 and February 2013. It is the shortest season of CSI: NY, consisting of only 17 episodes. Its regular time slot on Fridays moved to 8pm/7c for the first two episodes, then back to 9pm/8c beginning with the third episode. On May 10, 2013, CBS canceled the show, making it the second series in the CSI franchise to end. Episode 15, "Seth and Apep", was the second part of a two-part crossover with CSI: Crime Scene Investigation. CSI: NY The Ninth Season was released on DVD in the U.S. on June 25, 2013.
A homicide on the Brooklyn Bridge leads Mac and Jo all the way to San Francisco to find a missing teenage girl, but they are not sure if she is dead or alive.