The Alienist, written by Caleb Carr, is a captivating historical fiction novel set in 19th-century New York City. While not strictly focused on alien abductions, it explores the psychological aspects of criminal behavior and the pursuit of truth. The story follows a group of investigators, including a psychologist known as an 'alienist,' as they hunt down a serial killer. This atmospheric and suspenseful book offers a unique perspective on the human mind and the darkness that lurks within.