Looking for an authoritative and frank guide to Barcelona? I’d recommend Pepe Carvalho, a former cop, former Marxist and constant gourmet. You can find him in the crime fiction of Manuel Vázquez Montalbán, the Catalan journalist and novelist. That enterprising publisher Serpent’s Tail is issuing this month, for the first time in English, Montalbán’s Tattoo. It is also reissuing a couple of other Pepe Carvalho mysteries, The Man of My Life and An Olympic Death. The latter, which I took with me on my last trip to Barcelona, is set in a city gearing up for the Games…