Invisible murder - Lene Kaaberbol

In the eagerly awaited follow-up to The Boy in the Suitcase, Red Cross nurse Nina Borg's life is at a turning point. Her husband, Morten, has pleaded with her not to get involved in any more dangerous projects assisting illegal immigrants and refugees. But when Morten is away on business, Nina agrees to help her friend Peter at a camp of mysteriously ill Roma refugee children. The situation reveals itself to be much more complicated and perilous than she could have imagined, and suddenly more than her marriage is at risk.