An alienist is a term used to describe a doctor or psychiatrist who specializes in studying and treating mental disorders or illnesses. Full definition
Newly appointed police commissioner Theodore Roosevelt (Brian Geraghty) calls upon criminal psychologist (aka alienist) Dr. Laszlo Kreizler (Bruhl) and newspaper illustrator John Moore (Evans) to conduct the investigation in secret. (justjared.com)
The naive Sturgess character, an «alienist in training,» learns more and more about what's really going on. (southflorida.com)
It stars Daniel Brühl as a pioneering alienist — a.k.a. psychiatrist — Dakota Fanning as a feisty police secretary and Luke Evans as a newspaper illustrator on the trail of a murderer preying on boy prostitutes. (orlandosentinel.com)