Detective travel. The third book in a series of Italian adventures of the Russian girl Alexandra, a reluctant detective. Arriving again in her favorite Tuscan town, she has no idea that she will soon find herself among the mountains and castles of South Tyrol. Her friends appear again in the book - Police Commissioner Luca and the owner of the Tuscan castle, Count Roberto. Will the girl unravel the mystery of the Black Riders, will she find the killer of the old priest, and what role will the old owl play in her adventures? You will find out by reading this book.