This is a very accomplished book and deserves all its success. It is a coming-of-age novel about two lonely children who had traumatic incidents in their childhoods. Alice had a skiing accident, broke her leg and is forever labelled a cripple because of her limp. Mattia, meanwhile, abandoned his twin sister in a park; because she was mentally retarded, he found her an embarrassing encumbrance. She was never seen again. Giordano traces the next 24 years of their lives: their dislocation from society, their discomfort with their overbearing or overly solicitous parents, their distance from their schoolfriends and even from each other. The title comes from Mattia's notion (he's a maths buff) that Alice and he are "twin primes", like 11 and 13, or 17 and 19, lonely individuals that are forever linked but forever separated.
Part of the interest of the book comes from its minimalism. Scenes, dialogue and descriptions are brief, almost terse. It would have been easy to fall into melodrama and produce a happy resolution, but Giordano remains as icy as his characters, offering only misunderstandings and missed opportunities until the bitter end.
I had the fortune to be able to read the book in the original language and appreaciate all the strengh of the words. The description of everyday scenes and the feelings portrait make for a sad, but strangely beautiful, read. Very poignant