Houston, Texas may be the blues capitol of the world, but when aging blues musician and Vietnam veteran Willard "Cottonmouth" Dalton is asked to kill a man, only Bill Travis can sort out why and get to the bottom of a war between two competing blues taverns and discover the identity of who stands behind a seeming accidental death, an explosion, and a brutal murder-all within a single day and night Darkness, death and danger stalk the dirty piers...