When does Cold Case return?

Cold Case is an American police procedural crime drama television series. It ran on CBS from September 28, 2003, to May 2, 2010. The series revolved around a fictionalized Philadelphia Police Department division that specializes in investigating cold cases. The show examined many issues related to 20th century history, including racism, homophobia, transphobia, sexism, abortion, and police brutality.
The show is set in Philadelphia, Pennsylvania, and it follows Detective Lilly Rush, a homicide detective with the Philadelphia Police Department, who specializes in cold cases. Rush was initially partnered with Detective Chris Lassing (Justin Chambers) in the first five episodes and then with Detective Scotty Valens (Danny Pino) for the remainder of the series.