'A masterpiece.' Stav Sherez, author of The Intrusions 'A thrilling ride.' Irish Times 1950s Manhattan: the CIA carries out a covert study of psychoactive drugs. Ad man Ned Sweeney is dosed with MDT-48, and finds his horizons dramatically expand. . . Sixty years later, all that Ray Sweeney knows of his grandfather's life is that he committed suicide. But then Ray meets a retired government official, who claims he can illuminate the truth behind Ned's death. Both a sequel and a prequel to The Dark Fields, which was adapted into the hit movie Limitless, Under the Night explores the seductive power and dangers of unlocking the human mind.