Characters in The Alienist

John Schuyler Moore

The New York Times crime reporter who narrates the hunt.

Also in The Angel of Darkness

Dr. Laszlo Kreizler

The brilliant, controversial alienist who profiles the killer.

Also in The Angel of Darkness

Sara Howard

An ambitious woman determined to become a police detective.

Also in The Angel of Darkness

Theodore Roosevelt

The reform-minded police commissioner who backs the investigation.

Stevie Taggert

Kreizler's teenage groom and carriage driver, a street-wise youth in his household.

Also in The Angel of Darkness

Cyrus Montrose

Kreizler's valet and bodyguard, part of the doctor's unconventional household.

Also in The Angel of Darkness

Mary Palmer

Kreizler's housemaid, a member of the household who works alongside the investigators.

Marcus Isaacson

One of two brothers serving as NYPD detective sergeants who apply forensic methods to the case.

Also in The Angel of Darkness

Lucius Isaacson

The other of the two Isaacson brothers, an NYPD detective sergeant with a forensic bent.

Also in The Angel of Darkness