Naples is a city of “moist and exquisitely polluted air”, full of dark alleys illuminated by “blinding knifeblades of light”. Robb brings a painterly eye to his descriptions of the locals in the dark and dank Spanish Quarters area: “sylphlike girls and bountiful breastfeeding mothers hardened and thickened overnight into chunky walking armoured cars with voices like factory hooters” and old widowers “in decent threadbare clothes with a black mourning button on their lapel and living off the smell of an oiled rag”. Teeming Naples is the enthralling setting for Robb’s interweaved stories of mayhem, vice, riots and revolutions. This magical book’s structure is painterly, a dab of information here, another there, in no chronological sequence, while a picture slowly emerges. The spine of the book is Robb’s sensitive treatment of the influence of Michelangelo Merisi da Caravaggio on a series of 17th-century Neapolitan painters, culminating in the relatively unknown Bartolomeo Passante, described by Robb as one of the great visionary painters of the 17th century.