Paradise Key deals graphically with the interrogation techniques used by Americans to gain information. David, an American Counter-Intelligence agent, brings in for an interview a German medical doctor named Halb, rumored to have found a vaccine for Polio, a disease affecting thousands of American lives. David wants information about the vaccine in order to save the lives of countless children. However, as the Faustian bargain unfolds, we learn this knowledge was gained by the doctor's work in Nazi concentration camps with experiments on human prisoners. Over the course of one night, David must obtain this formula hidden inside Halb's head, or risk an American disaster.