Unknown

In the unbearable heat of another sultry Washington, D.C., summer, a serial killer is on the loose. Dr. Tess Court, one of the capital’s most successful psychiatrists, wants nothing to do with the case—until the police convince her to lend a hand to the lead investigator, legendary ladies’ man Detective Ben Paris. Scarred by his family’s history, Ben has even less use for shrinks than Tess has for him—but the forces of animal magnetism and a shared desire to catch the demented criminal known as “The Priest” inexorably erode the walls they’ve built.

New York in the spring of 1880 is a place alive with wonder and curiosity. Determined to learn the truth about the world, its residents enthusiastically engage in both scientific experimentation and spiritualist pursuits. Séances are the entertainment of choice in exclusive social circles, and many enterprising women - some possessed of true intuitive powers and some gifted with the art of performance - find work as mediums.

Just after midnight, the famous Orient Express is stopped in its tracks by a snowdrift. By morning, the millionaire Samuel Edward Ratchett lies dead in his compartment, stabbed a dozen times, his door locked from the inside. One of his fellow passengers must be the murderer. Isolated by the storm, detective Hercule Poirot must find the killer among a dozen of the dead man's enemies, before the murderer decides to strike again....

When Clementine Kaye, archivist Beecher White's first childhood crush, shows up at the National Archives asking for his help, Beecher tries to impress her by showing her the secret vault where the president of the United States privately reviews classified documents. They accidentally happen upon a priceless artifact - and find themselves suddenly entangled in a web of deception, conspiracy, and murder.