[I have two guests for the price of one this month. I first met these identical twins from Cardiff when they were shortlisted for the Exeter Novel Prize. Well, actually, I saw them across the room but was too shy to go and chat to them; they seemed so self-assured (and elegant - although they will probably hate me for saying that). If I'd only known how nervous they were... Then I heard them speak at the East Budleigh Literary Festival and they blew everyone away with their polished - and very funny - double act. This month, I am delighted to be chatting with C L Raven.]