Koestler, ArthurPersonaresponsabilità secondariaDarkness at noon / by Sidney Kingsley ; based on the novel by Arthur KoestlerDarkness at noon : a play in three acts / by Sidney Kingsley ; based on the novel by Arthur Koestler. - New York [etc.] : Samuel French, c. 1952.AutoreTwilight bar : an escapade in four acts / by Arthur Koestler. - New York : The Macmillan company, 1946.