Berta is the greatest Spanish detective of all time. She is a tiny woman, no more than one metre fifty high, with a freckled face, ginger hair, and a squint. Although her pronunciation is clearly Castilian with, each vowel and consonant cleanly and perfectly articulated in the purest correct style, she swears like a lorry driver. She gambles, drinks like a fish, and smokes like a chimney. She has been married so many times that she can't even remember...