Carlos Ruiz Zafón said this quote

Those places where sadness and misery abound are favoured settings for stories of ghosts and apparitions. Calcutta has countless such stories hidden in its darkness, stories that nobody wants to admit they believe but which nevertheless survive in the memory of generations as the only chronicle of the past. It is as if the people who inhabit the streets, inspired by some mysterious wisdom, relalise that the true history of Calcutta has always been written in the invisible tales of its spirits and unspoken curses.