The Black Moth was Georgette Heyer's first historical novel, written when she was only 19. It was set in the Georgian period, and although it was with the Regency period that she really made her name, it has many of the characteristics that were to make her so popular during her lifetime ....
Criminal investigating officer Hanne Wilhelmsen considers the possibility of a serial killer as she tracks down a series of numbers written in blood appearing on walls all over Oslo.