From the back of the book:
Land of the Laughing Man
When the mighty Kadum was plunged into the ocean, a great wave of the titan's blood inundated part of the continent of Termana. In the aftermath of this divine flood arose the nightmarish wilderness known as Blood Bayou.
Ruled now by the Laughing Man - known aslo as the Jack of Tears, Momus, the Black Jester, and a host of other names - the bayou is a place of darkness, disease and twisted creatures.
This sourcebook explores that wetland of mysteries and horrors - from the bayou settlements to new magic, monsters and adventure ideas. Blood Bayou also reveals the truth about the Jack of Tears: his history, his schemes, his followers and his legacy of evil.
So, come; enter the swamp of secrets. The Laughing Man awaits.