Arthur Koestlerauthor : Arthur KoestlerArthur Koestler Book SeriesThe Act of CreationThe SleepwalkersJanus: A Summing UpThe Ghost in the MachineThieves in the Night: Chronicle of an ExperimentThe Call-Girls: A Tragi-Comedy With Prologue and EpilogueThieves in the NightJanusThe Call-GirlsDarkness at Noon