Packed with mystery and adventure, the first story 'Phantoms of Arendelle', will keep fans guessing right to the last page! Will Kristoff be able to stop his friends in time? Follow the loveable pair of Olaf and Kristoff through their trail of chaos in the second story of the book; 'Olaf and Sven on thin ice'.Packed with mystery and adventure, the first story 'Phantoms of Arendelle', will keep fans guessing right to the last page! Will Kristoff be able to stop his friends in time? Follow the loveable pair of Olaf and Kristoff through their trail of chaos in the second story of the book; 'Olaf and Sven on thin ice'.