'The Tragedy of Mr. Morn' (1924), Vladimir Nabokov's largest and most significant work until the mid-1920s, was not published in the author's lifetime. It is being published separately for the first time, a century after its creation. According to B. Boyd, 'The Tragedy's' intense plot, shifting levels of reality and illusion, fantastical and colorful, anticipated the style of Nabokov's mature work, especially his enigmatic novels such as 'Solus Rex' and 'Pale Fire.' The classic plot of a love triangle, betrayal, escape, and revenge is superimposed with a subtly defined, Nabokovian alternate reality, in which only the magic of creativity can transform the terrifying reality of the rebellious northern capital of a brilliant but doomed kingdom. The edition is supplied with commentary and an Appendix, which contains a prose summary of the Tragedy, working notes, early versions and new archival materials.