With her series, the author invites the reader to a trip through Italy: to Rome (Vol. 1 "The War of the Roman Cats" A1), to Busseto, the city of Verdi (Vol. 2 "The Theft of Aida" B1), to Cremona, the city of Stradivari (Vol. 3 "The Lost Stradivari" B2), to Venice (Vol. 4 "The Gondolier of Death" A2), to Florence (Vol. 5 "The Poison of the Medici" A1), to verona (Vol. 6 "Death at the Opera" A2) and to Milano (Vol. 7. "Fear on the Catwalk" A1)