The hunt for the suspected killer of 23-year-old Norwegian student Martine Vik Magnussen, whose body was found buried under rubble in a London basement in 2008. She died after a night out with "billionaire playboy" Farouk Abdulhak, son of one of Yemen’s richest and most powerful men. Police found Martine’s remains in Farouk's apartment building. But Farouk had already fled. Fifteen years later, he’s still on the run. The BBC's Nawal Al-Maghafi was born in Yemen and has been on the case for more than a decade. This is the story of how she finally tracked down the elusive Farouk Abdulhak.