Sarmo explores the mystery associated with the murder of a landowner and the tangle of crimes, threats, and conspiracies created by a letter he left behind. At the same time Sarmo helps the consuls of imaginary small states of South America in a difficult situation, and charms their daughters.
Finland late 1700s. After Katarina Thorwöst becomes a widow, there are many suitors, but her heart belongs to the fencing teacher lieutenant Carl-Magnus Schildt.
