Prince Harry said Britain's royal family regularly leaks stories about each other, calling it a "dirty game", in a new trailer that aired Monday for a Netflix documentary series focusing on him and his wife, Meghan.

The streaming service said the first three episodes of the series will be available on Thursday, amid widespread speculation about what the couple, the Duke and Duchess of Sussex, will say about the other royals.

Since Harry and Megan stepped down from their royal duties two years ago and moved to California, the couple has been sharply criticizing the royal family and accusing them of racism, which the family denies.

The prince indicated in interviews that he hardly speaks to the rest of the family, especially his father, King Charles, and his older brother, Prince William, the heir to the throne.

"Nobody knows the whole truth," Harry says in the trailer. "It's us who know the whole truth."

In the short clip, Harry referred to people working in the royal palaces briefing reporters on each other's news, an issue he had talked about in the past.

"There is a family hierarchy," he says. "You know there are leaks, but there is also fabrication and fabrication. It's a dirty game."