When Sonny Marsallas, a New Orleans grifter and street hustler with whom Dave Robicheaux shares a strange, symbiotic relationship, turns up in New Iberia with a... » 

When Sonny Marsallas, a New Orleans grifter and street hustler with whom Dave Robicheaux shares a strange, symbiotic relationship, turns up in New Iberia with a mysterious notebook he entrusts to Dave, a series of violent events occur. «