"How I Met Your Mother" season 9 is the final season for the hit CBS sitcom, and actor Josh Radnor, who plays Ted Mosby, gave a preview of some episodes and the show's finale in a recent interview. He revealed he's not entirely sure how the show will wrap up in its final episode.

"We've done five episodes, and I think they're as good and as strong as any episodes we've done," Josh Radnor told Collider in an interview.

The website asked Radnor if he knew how the show would end in the finale episode of season 9, the last season of "How I Met Your Mother."

"Not entirely," Radnor admitted. "They've told me some of the arcs of this season. The narrative character knows everything. Whether or not he's a reliable narrator is a question for PhD students to hash out in their thesis about 'How I Met Your Mother.' But, the character that I play doesn't have all that information. He's playing it forward. It's helped me to have more naivete about what's about to happen. I just get the scripts a few days before. In some ways, I'm a fan of the show, but I just get to know what happens before the rest of the world."

Josh added that the timing is perfect for the ending of the series to come, IB Times reports.

"We'll be happy when it ends, but also inconsolable. I think there's going to be a grieving that goes on because it's not just five people. It's 100 people that we've really grown to love," the actor stated.

Production for season 9 of "How I Met Your Mother" began in July, and will premiere on September 23.