Executive producer Robert Kirkman is now revealing that he has decided on an idea for how to end the post-apocalyptic zombie series "The Walking Dead." During an interview with Entertainment Weekly, Kirkman said the finale is not about how the AMC show ends, it's about when.

"I do know what I'm building toward, yes," Kirkman said of the comic-book-based TV series. "I don't know exactly what issue that's going to fall on, per se, and I do have a lot of road laid out before that that is going to take a long time, but I certainly know exactly what I'm building to."

The idea, Kirkman said, came to him a while ago about how all of the characters' stories would end.

"From the very beginning I would always plot these big, long overarching stories," he said. "I wouldn't really map out how many issues those were going to take, but I would always make sure that I had somewhere between two and ten years of story mapped out ahead of me.

"About a year or two ago, I finally nailed down exactly what I want the ending to be," he added. "So now I've kind of got two trails of story going in my head. One working to where I'm at very far into the future, and one working from the end backwards. When those two stories meet, then I'll know exactly how long the story is. I'm rapidly approaching that point."

While season five doesn't begin until Oct. 12, fans are already eagerly awaiting any hints from the comic books. In recent issues, there has been a time-jump into the future, where the characters are several years ahead of where readers left them as they struggled to survive in the zombie-filled land.

However, Kirkman assures "The Walking Dead" won't be ending anytime soon.

The latest extended trailer for the AMC show can be seen below.