The year is 1897, and Carr's plot is initiated by the kidnapping of a Spanish diplomat's baby--then thickens, quite pleasurably, as suspicion falls on Elspeth Hunter, a malevolent nurse who is actually Libby Hatch, a malevolent gang moll and the suspected murderess of her own children. The pursuit, capture, and attempted conviction of Libby involve such notable historical figures as painter Albert Pinkham Ryder, women's-rights crusader Elizabeth Cady Stanton, Libby's defense attorney Clarence Darrow (who dominates a fascinating extended courtroom scene), and (back also from The Alienist) New York City Police Commissioner Theodore Roosevelt, who commandeers the US Navy to aid in the story's climactic pursuit.