CRIME & MYSTERY. Probation officer, Cate Austin, has moved for a fresh start, along with her daughter Amelia, to live with her police detective boyfriend, Olivier Massard. But when she realises just how casually he is taking the disappearance of Ellie, Cate decides to investigate matters for herself. She discovers Luxembourg has a dark heart. With its geographical position, could it be the centre of a child trafficking ring? As Cate comes closer to discovering Ellie's whereabouts she uncovers a hidden world, placing herself in danger, not just from traffickers, but from a source much closer to home.