Pearl Barley and Charlie Parsley

Pearl Barley and Charlie Parsley are different in every way. Pearly Barley loves death-defying missions, solving mysteries, talking very loudly and is a terrible show-off. Charlie Parsley prefers reading in quiet places to jumping off buildings, is scared of everything and everyone, and is painfully shy. So how on earth is it that they are such good friends? It is a heart-warming, quirky and uplifting book about innocence, fears, self-belief and - above all - friendship.

Where can I find a copy?