The Alienist is an upcoming American drama television series based on the novel of same name by Caleb Carr. The psychological thriller drama is set in 1896, when a series of gruesome murders of boy prostitutes has gripped the city. Newly appointed top cop Teddy Roosevelt calls upon Dr. Laszlo Kreizler, a criminal psychologist — aka alienist — and newspaper illustrator John Moore to conduct the investigation in secret. Joining them in the probe is Sara Howard, a headstrong secretary at Police Headquarters. The new season of TNT’s drama premieres July 19.