The Redemption of Alexander Seaton

Is the young man merely drunk or does his tottering walk suggest something more sinister? When he collapses, vomiting, over the two whores who find him on that dark wet night, they guess rightly that he's been murdered by poisoning. So begins the tale set in the town of Banff, Scotland, in the 1620s. The body of the victim, the apothecary's apprentice, is found in the house of Alexander Seaton - a fallen minister. Why was the body moved to Seaton's house? What is the significance of the unusual poison used to kill him? And why would anyone want to murder this likeable young man? Seaton sets out to find the answers.