Find out what's next for Duke, Audrey, and Nathan. The second half of Haven's fifth season still does not have an official airdate. 'Haven' Season 5: How Will Duke Handle The Trouble Bomb Fallout? Try 'Selfish, Noble, Clever & Brave' The Syfy series received a supersized 26-episode fifth season, an enormous order that was broken down into two 13-episode runs.