When does Boss return?

The series stars Kelsey Grammer as Tom Kane, the mayor of Chicago, who has been diagnosed with Lewy body dementia, a degenerative neurological disorder. The first season premiered on October 21, 2011 and the second season premiered August 17, 2012. A film was discussed to finish the show's storylines, but those plans were cancelled after series creator Farhad Safinia declined to move forward with the project.