The son of Norway's Crown Princess is due to return to a court in Oslo on Thursday for the third day of his trial for rape and more than 30 other alleged offences. On Wednesday, Marius Borg Høiby, 29, told the court he has lived a life of partying out of an extreme need of validation. He denies four allegations of rape as well as other serious charges against him. The 29-year-old defendant, who was born four years before his mother, Mette-Marit, married Norway's Crown Prince Haakon, is not a member of the royal family or a public figure, but grew up as part of the wider family. The BBC's Paul Kirby reports from outside the court in Oslo.