Georgie is sent to represent the British royal family at the wedding of her former school friend, Princess Maria Theresa, in a remote Transylvanian castle. The gloomy surroundings, rumours of vampires and the strange behaviour of several guests make the visit unsettling even before a prominent wedding guest is poisoned during the celebrations.
Trapped by winter weather and surrounded by people with dynastic and political motives, Georgie investigates the victim’s movements and the rivalries within the castle. She must expose a human murderer before fear and superstition overwhelm the wedding party and place the bride in further danger.