The book "Maktens rivaler 1755-1792" examines the grueling struggle for political power in Sweden between the Royal House and the House of Knights - for parliamentary power or royal autocracy - which went on continuously for forty years, from the Estates of Liberty to Gustavian autocracy. The struggle was sometimes open, sometimes hidden, but was always very much alive. Moreover, the battle was fought by surprisingly dirty means on both sides: repeated unconstitutional acts, military-led coups d'état and treasonous conspiracies on one side, corruption, political courts and covert intrigues on the other. The investigation focuses on the four personalities at the center of the conflict: Queen Lovisa Ulrika, her son Gustav III, the leader of the House of Knights, Axel von Fersen, and the "schemer" Carl Fredrik Pechlin.