From Kensington to the East End, under candlelight, gas lamp and then neon signs, London is both a bustling physical metropolis and a stirring psychic encounter. The most depraved depictions of London in fiction, film, poetry, television and theatre have irrevocably merged with the reality of its dark history, creating a phantasmagoria defined by murder, vice and the unnatural. In this panoptic look at the capital at its most eerie and macabre,...