The British actor, who plays David Estes in the show, said that there was a "big finish" coming and that "someone is going to get it".
Watch our interview with David Harewood about the Homeland finale:
"It will all come out in the wash. There's a big finish. The last episode, there's a big twist. Someone is going to get it. Someone is going to get it. Who it's going to be, nobody knows," Harewood teased.
Harewood, who joked that he was the "most hated man in American television right now", also insisted that he wouldn't be annoyed if he was the character killed off from the show.
"We have a saying on Homeland. The story is king. If the story takes you that place, it takes you that place," he said.
"I don't think anyone would be sad. The story is king."
The Homeland finale 'The Choice' airs on Sunday night (December 16) in the US on Showtime. The show's penultimate episode 'In Memoriam' airs in the UK on Channel 4 this weekend.