Dear Bernard, I have recently started to buy your books to make myself a collection. Inside your books I am able to see what books comes next. The ones I have so far are the same material and kind of design. I went to buy Sharpe’s Rifles (The book after Prey) I found that the front cover was a totally different design and material to how the other books are. I was just wondering why this is? Because my collection looks abit odd with this one odd front cover. If you could answer me it would be great, Many Thanks. Annie