When John Frankel’s ex-wife is discovered dead on the floor of his Manhattan studio apartment, the NYPD detective instantly becomes the prime suspect in her murder. Then more information surfaces, linking his gun to the fatal bullet, a motive is discovered and Frankel flees the city, all of which further convinces his colleagues of his guilt. In spite of the mounting evidence, Frankel’s bride-to-be, Rachel Grant, and her father, Austin Grant, formerly of Scotland Yard, are certain of his innocence. But with the police under orders to use whatever force necessary to stop what they view as a dangerous criminal, the duo will have to act fast before the manhunt goes violently wrong.

Christmastime in London. When three seemingly unconnected victims are murdered with matching sequential Roman numerals carved into their foreheads, Metropolitan Police Commander Austin Grant finds his answer in one of the last places he’d expect: the Holy Bible. Each of the deaths correspond to a transgression of one of the Ten Commandments, and Grant must find the killer before the remaining Commandments are commemorated with homicides. Unfortunately for Grant, the next victim with a number on their forehead turns up not in London, but across the pond at the iconic St. Patrick’s Cathedral in New York City, turning this English murder case into a transatlantic manhunt spanning two global metropolises, each with its own rich history and culture.