Stratos Gazis hates being called a hit man. What he is, is a conscientious fixer. He fixes problems that few can fix. The story centres around the blue-eyed orphan Emma, the 'baby blue' of the title, a beautiful teenage girl with a talent for card tricks of exceptional sophistication - all the more impressive for her tender years and the blindness that has afflicted her since the age of eight. When her father is brutally murdered, Angelino, a well-connected Athenian underworld figure, takes the girl under his wing and retains the services of Stratos to find her father's killers.