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