ABC's Lost has thrilled and befuddled fans ever since ABC unveiled the supernatural drama four years ago. Now the story of the people stuck on the Island is continued as the show returns on January 31. In an interview with Entertainment Weekly, Matthew Fox, who plays Dr. Jack Shepard on the show, provided some hints about the upcoming episodes.

Fox discussed his excitement about the finale of Season 3, as well as the difficulty he had in keeping the ending a secret. "I was walking around with the cat-that-ate-the-canary look on my face. And when I would get questioned on it, I would say, 'I can't say anything, but, man, I can't wait for you to find out.' Even a lot of the crew didn't know. When the scripts went out, the last scene of the episode was missing. So when we started shooting, the crew was just like, 'Oh my God!'" Fox said.

He also gives a brief word about the supernatural elements of the show coming to the forefront in Season 4. "Last year, we find out Jack and Kate are off the island. How the f--- did that happen? And why does he want to go back? In answering those questions, you have to start addressing the bigger, epic scope of the show. In doing that, you're going to get into questions about the show that the audience is just dying to start finding out. What is this island? Where is this island? When is this island?"

To read the full interview with Matthew Fox CLICK HERE