* "Det usynlige bibliotek" (2019)
* "Det mærkelige bibliotek" (2020)
* "Det hemmelige bibliotek" (2021)
* "Løgnernes by" (2022)
* Faglitteratur:
* "The Life and Letters of Sir Arthur Conan Doyle" (2010)
* "Sherlock Holmes:A Biography" (2012)
* "The Baker Street Irregulars" (2014)
* "The World of Sherlock Holmes" (2016)