When does Criminal Minds return?

Criminal Minds premiered on CBS on September 22, 2005. The series follows a group of criminal profilers who work for the FBI as members of its Behavioral Analysis Unit (BAU) Its success has spawned a media franchise, with several spinoffs, a South Korean adaptation, and a video game.
The series follows a group of criminal profilers who work for the FBI as members of its Behavioral Analysis Unit (BAU) Using behavioral analysis and profiling to help investigate crimes and find the suspect known as the unsub (unknown subject) The team is supervised by Unit Chief Aaron Hotchner and later Emily Prentiss.