When does Mike & Molly return?

Mike & Molly is an American television sitcom. It aired from September 20, 2010 to May 16, 2016. The series stars Billy Gardell and Melissa McCarthy as the eponymous Mike and Molly, a couple who meet in a Chicago Overeaters Anonymous group and fall in love.
Chicago Police officer Mike Biggs and elementary school teacher Molly Flynn meet at an Overeaters Anonymous meeting. Mike initially lives in a one bedroom apartment and often visits his cantankerous, divorced mother, Peggy. The Flynn household soon adds Joyce's boyfriend and later husband, Vince.