This Book refers to Miss Marple
When Modig explains her theory to Faste, he calls her "Miss Marple", a character in a series of books written by Agatha Christie.
Mikael Blomkvist, publisher of Millennium magazine, has made his living exposing the crooked and corrupt practices of established Swedish figures. So when a young journalist named Dag Svensson approaches him with a meticulously researched thesis about sex trafficking in Sweden and those in high office who abuse underage girls, Blomkvist immediately throws himself into the investigation.