'Vikings' season 5 spoilers: Ragnar lives on vicariously through his sons, says show creator

(Facebook/Vikings)A promotional image for "Vikings"

Just two weeks since season four of History's historical drama series "Vikings" came to a thrilling end, spoilers for the next season are already surfacing across the internet, and the writer of the show speaks up about these fan speculations.

In an interview with Rotten Tomatoes, "Vikings" creator Michael Hirst confirmed that despite the death of Ragnar (Travis Fimmel), he will continue to live on. "You think I'm killing Ragnar? I am killing Ragnar, but he will never die because he will live on through his sons," said Hirst. He also emphasized that "Vikings" is not just a story about Ragnar Lothbrok but of Ragnar and his sons.

"He will live on through at least two of them," he added, saying that his sons Bjorn (Alexander Ludwig) and Ubbe (Jordan Patrick Smith) share the dream of their father of building colonies in different lands, something that they will fight for until the end. "His ghost, his presence — he's still there. And so Ragnar doesn't disappear," he added.

Meanwhile, some speculate that Lagertha (Katheryn Winnick), the Queen of Kattegat, may die in the upcoming season. Her death was predicted by the Seer (John Kavanagh) who had a vision of her getting killed by one of Ragnar's sons. On the season four finale, Lagertha had been stabbed in the chest during the siege in Paris, and she was nowhere to be seen on the flash-forward.

On the other hand, Hirst, speaking Mobile & Apps, belied the rumors of Lagertha's demise, as he seemed to have taken to heart a reminder that he got from one of the series' avid fans. "There was a fan in New York who wrote to me years ago and she said, 'I don't' care how many of the male characters you kill off, but if you do anything to Lagertha, you're in trouble.' So I'm very careful about that warning," he said.

There is no specific date for the season five pilot, but the series is set to return sometime in spring 2017.