The winners of the picture books, 5-12s and teen categories of the Waterstones children's book prize will battle it out to be overall winnerThe fall from fashion of vampire romance and fantasy in favour of more gritty reads is nowhere more evident than in the teen shortlist for the Waterstones children's books prize. Divided for the first time into three age categories – picture books, 5-12 and teens – the prize's young adult section features titles covering a range of hard-hitting issues from class and date rape to terrorism and refugees. Annabel Pitcher's debut novel My Sister Lives on the Mantelpiece, which was longlisted for the Guardian children's fiction prize, focuses on 10-year-old Jamie Matthews and his family as they ...