> It should have been a wonderful holiday: four young people travelling together through the Italian countryside to Venice. Everyone is so friendly - particularly the charming elderly gentleman who shares his first-class railway carriage with them for part of the way. So it is a terrible shock, on their arrival at Turin, to discover that Signor Galassi has been the victim of a brutal attack - a sordid little robbery with violence. >Their spirits somewhat dampened, the four continue on their journey, only to find that trouble pursues them. For they have inadvertently walked off with crucial evidence of a more serious crime - evidence that someone needs desperately to retrieve....