“I just don’t know how much there is left to say. I’m not saying it’s running out of gas, but we told the story. It’s time to go. I know some people will have a harder time dealing with that than others. But my kid was six when we started (and) now he’s in high school. Seven years is a long time… I think it would be cool to see the core group still there.” John Slattery insists it’s time to end TV drama Mad Men. The series will come to a close after the upcoming final season.