In 1950s Manhattan, the CIA carry out a covert study of psychoactive drugs. When they dose ad man Ned Sweeney with MDT-48, he finds his horizons dramatically expand as he is hurtled through the corridors of the rich and powerful, all the way to the government's nuclear tests at Bikini Atoll.
But what of Ned's colleague who was also dosed that night - last seen running half-naked and screaming into the Broadway traffic - and for how long can Ned maintain the extraordinary pace and trajectory of his new life?
Over sixty years later, the only fact Ray Sweeney knows about his grandfather's life is that it ended when he jumped out of a hotel window in Manhattan, an event which scarred his family thereafter. But then Ray meets a retired government official, ninety-two-year-old Clay Proctor, who claims he can illuminate not only Ned's life and death, but also the truth behind the mysterious drug.
Both a sequel and prequel to Alan Glynn's classic debut, The Dark Fields - which became the hit movie Limitless - Under the Night is an irresistible thriller about the seductive power and dangers of unlocking the potential of the human mind.