An unflinching psychological thriller amidst the underbelly of New York City's "Gilded Age," The Alienist follows Laszlo Kreizler (Bruhl), a brilliant and obsessive "Alienist" in the controversial new field of treating mental pathologies, who holds the key to hunting down a never-before-seen ritualistic killer murdering young boys. <p> The complete first season of the TV series The Alienist.