From the back of the book:
It is an old city with a colorful, often tragic history, a place where different races, cultures, and religions meet, sometimes blending and other times clashing. It is a city rich in the arts, where music and food are celebrations of life. Yet beneath it all, there is another city, a haunted place where mysterious cults worship in the surrounding swamps, sagging plantations hide terrifying secrets, and the sins of the past do not stay silent or unanswered. The dark and dangerous powers of the Cthulhu Mythos are woven thickly into the tapestry of the Crescent City; they have always been and always will be.
But through it all, there have been a few brave and hardy souls who fought against these sinister forces. Many of them fall in this crusade, their bodies broken, their spirits corrupted, their minds unhinged by the horrors they face. Because of their struggles and sacrifices, the Crescent City is protected, and the blasphemous horrors beyond human understanding are kept a bay... at least for now...
These are a few of their tales.