London, UK – Prince William and Kate Middleton like to unwind in front of the TV in the evenings, and there's one surprising genre they can't get enough of: reality TV.

Royals, they're just like us!

As palace expert and biographer Robert Hardman reports in his new book, Elizabeth II: In Private. In Public. Her Story, William and Kate enjoy watching TV in the evenings – quite unlike the prince's father, who prefers to spend his nights working.

"The King is the one who still enjoys sitting up writing letters into the night, whereas Prince William's idea of a fun evening, says one of his team, is to 'sit down with the Princess in front of The Traitors,'" the book reveals, according to People.

Donald Trump South Park takes shady swipe at Trump with surprise name change

The Traitors, which was originally based on the Dutch series De Verraders, debuted in the UK in 2022.

The series has become an international sensation and has spawned several versions, including an American iteration hosted by Alan Cumming that premiered in 2023.

In a murder-mystery-style game, celebrity contestants work to unmask the secret "Traitors," who are deceiving the others and eliminating "Faithfuls" from the game.

Interestingly, King Charles' second cousin, Lord Ivar Mountbatten, competed in season 3 of the US version – and even won the game alongside his fellow Faithfuls!