WRITTEN BY BRIAN AZZARELLO; ART BY MARCELO FRUSIN; PAINTED COVER BY TIM BRADSTREET In stores January 30. "Ashes and Dust" Part 1 of 5. In a seedy Los Angeles S&M club, a grisly murder has taken place. The detectives assigned to the case are at a loss to explain how it happened, though they have a group of witnesses who saw it occur. Some knew the victim just in passing, as a face who hung around. Others had a much dee