The trial has opened of the son of Norway’s crown princess on charges that include rape. Tuesday's session opens weeks of proceedings in a case that has cast a shadow on the royal family’s image. The 29-year-old Marius Borg Høiby is the eldest son of Crown Princess Mette-Marit from a previous relationship and the stepson of the heir to the throne Crown Prince Haakon. He has no royal title or official duties. Høiby has been under scrutiny since he was repeatedly arrested in 2024 on various allegations of wrongdoing. Høiby took his seat at the Oslo district court Tuesday morning for the trial which is scheduled to last until March 19.