The Cabinet of Dr. Leng

In Agent Pendergast series book 21 (book three of the “Leng Quartet,” following Bloodless), the brilliant, eccentric, opium-addicted FBI agent Aloysius Pendergast is back “reading” criminal minds, but he’s devastated that his ward (and love) Constance Greene has left him. Using a time machine, she has traveled to a parallel universe in 1880 New York City to prevent the murder of her siblings. They imprisoned her brother on the ominous Blackwell’s Island, and her sister will become a victim of Dr. Enoch Leng—a serial killer surgeon who performs experiments on the poor. Pendergast must save Constance, but the only way is to travel back in time. In the present, Pendergast’s NYPD friend Vincent D’Agosta investigates the murder of a Lakota curator of Native American artifacts at New York’s Museum of Natural History. When Pendergast’s former FBI partner, Armstrong Coldmoon, investigates the death of a Lakota Sioux man on the Rosebud Reservation, it’s soon clear that the murders are related.