La reina que surgió del frío

In 1961, the Queen travels on the royal train to a state visit to Italy. During the journey, an unreliable witness claims to have seen a murder through a carriage window. What if the victim were an old friend of Princess Margaret's new husband? Determined to uncover the truth, Her Majesty enlists the help of her private secretary, Joan McGraw, in an investigation that takes her from the royal train's compartments to the canals of Venice. There, amidst diplomatic intrigue, state secrets, and the shadows of the Cold War, the Queen must use her intelligence and unwavering discretion to solve a crime that threatens to expose more than one secret.