Dakota Fanning has signed on to co-star in TNT’s highly anticipated adaptation of “The Alienist.” The cabler has also renewed its Michelle Dockery drama, “Good Behavior,” for a second season.

“Alienist,” from Paramount TV and Turner’s Studio T, revolves around the search for a serial killer in turn of the century New York City. Fanning plays Sara Howard, a secretary for police commissioner Theodore Roosevelt who is determined to become the city’s first female police detective. Daniel Bruhl and Luke Evans co-star.

The series, scheduled to bow late this year, is based on Caleb Carr’s best-selling novel of the same name. Production is slated to begin soon in Budapest.

“Alienist” is TNT’s biggest drama swing for the coming year. [Source]