Short answers, pulled from the story.
Norstedts Förlag was founded in 1823 by Per Adolf Norstedt, originally under the name P. A. Norstedt & Söner. The company's roots extend further back to 1821, when Per Adolf purchased an existing printing business whose own origins traced to the Royal Printing firm of 1526.
Storytel, a digital subscription service, acquired the Norstedts Publishing Group on the 22nd of June 2016 for 152 million SEK. Before that, the group was owned by the Cooperative Association, known as KF in Sweden.
Norstedts has published Swedish writers including August Strindberg, Astrid Lindgren, Henning Mankell, Stieg Larsson, and Ingmar Bergman. Foreign authors include Nobel Prize laureates Mario Vargas Llosa, Orhan Pamuk, Imre Kertész, and Bob Dylan, as well as J. R. R. Tolkien, J. K. Rowling, and Graham Greene.
The Norstedts Publishing Group consists of Norstedts, which publishes fiction and non-fiction, and Rabén & Sjögren, a children's book publisher that joined in 1998. The group has over 100 employees and published around 400 books in 2013.
Norstedts Förlag is based at Norstedtshuset at Riddarholmen in central Stockholm, Sweden.
Norstedts publishes the Millennium series of Swedish crime novels. The series is among the most internationally recognized titles in the Norstedts catalogue.