Claudio Ruggeri 
Never More Than Twice [EPUB ebook] 

A message found in a bottle and the curiosity of an antiquarian lead Vincent Germano to launch an investigation, the conclusion of which can only be at the limits of improbability. The chief will often be surrounded by persons to whom he will have to give an explanation, issue an order or ask for advice, but in fact he will be alone, as are all those who are seeking the truth.