In medieval Tallinn, a famous knight who is freed from the pirates of the Baltic Sea is murdered. The hero's head is cut off and his mouth is stuffed with coins. The gold chain he bought the same day is missing. The bailiff orders Melchior, an apothecary, to investigate the crime. The clever young man discovers that the slain was looking for a mysterious "Tallinn prisoner" and the traces lead to the Dominican monastery. A fabulous sequence of bloodwork is unleashed - anyone who comes into contact with this secret is in danger of dying.
On a cruise ship bound for the Caribbean, 42 year old Nanna has invited her daughter Cille and her best friend on a cruise to celebrate Cille's 18th birthday. The expectations are high, and they have big plans set for the three days aboard the cruise. But on the first evening, the dream vacation descends a nightmare, and Nanna realizes that in order to get justice, she must take matters into her own hands.
In the middle of the night, a drunk town guard happens to meet the daughter of a rich merchant… who drowned herself into a well 10 years ago. Soon after the town guard falls dead from the tower. This is followed by two other suspicious deaths. Doubting the existence of the ghost, Melchior has a hunch that these ‘accidents’ are part of a heinous crime. Tracking down the killer, his path will cross with heretics, old feuds and dark family secrets.
