After suffering a personal tragedy, and desperate for justice, Jacob Kanon, a veteran New York City police detective, embarks on the search for a twisted killer who is leaving a bloody trail of elaborate murders across Europe.
Celebrated sleuth Hercule Poirot, now retired and living in self-imposed exile in Venice, reluctantly attends a Halloween séance at a decaying, haunted palazzo. When one of the guests is murdered, the detective is thrust into a sinister world of shadows and secrets.
