Lene Kaaberbol and Agnete Friis. Invisible Murder. New York: Soho Crime, 2012. 340 pages. ISBN 9781616951702.
Following up on their debut thriller, The Boy in the Suitcase, reviewed on this blog on February 25, 2014, Kaaberbol and Friis continued their story of nurse Nina Borg. Having promised her husband that she would put her own family above the needs of the refugees and destitute immigrants that she regularly aids through a volunteer organization, Nina refuses to help when her fellow volunteer calls her for help with a Roma immigrant who has fallen ill. When Peter, the doctor-volunteer who asked her for help falls ill himself, Nina breaks her promise to her husband and comes to Peter's aid. Nina tries to find the sick Roma immigrant, but is unable to locate him, finding instead a whole group of Roma immigrants who have fallen prey to the same illness.
In the meantime, both Hungarian and Danish police are following the trail of what appears to be terrorists planning an attack in Denmark. As they close in on the suspected terrorist, Nina finds herself at the center of a complicated plot involving both Muslim and Roma immigrants. Always trying to do the right thing for those who are down and out, Nina puts her own family and life in jeopardy.
Invisible Murder is an entirely believable exploration of many complex forces in modern society. The characters are well-developed and the suspense runs high throughout the book. I recommend this to anyone who enjoys thrillers.