For Dave Robicheaux, life in Louisiana is filled with haunting memories of the past - images from Vietnam, the violent streets of New Orleans, and his own troubled youth. In Crusader's Cross, a deathbed confession from an old schoolmate resurrects a story of injustice, the murder of a young woman, and a time in Robicheaux's life he has tried to forget.

Her name may or may not have been Ida Durbin. It was back in the innocent days of the 1950s when Robicheaux and his brother, Jimmie, met her on a Galveston beach. She was pretty and Jimmie fell for her hard - not knowing she was a prostitute on infamous Post Office Street, with ties to the then Ida was abducted and never seen again.