In "The Late-night News," a seasoned journalist is found murdered in his office. The investigation of the crime falls to a grizzled detective, who uncovers a web of corruption and deceit within the world of Greek media. As he delves deeper into the case, he finds that the journalist was working on a story that could have significant political implications, making the list of suspects long and dangerous. The detective must navigate through this complex world to find the killer, all while dealing with his own personal demons.

The book is a classic detective novel that follows the young, ambitious French detective Monsieur Lecoq as he investigates a mysterious double murder at a Parisian inn. Initially appearing to be a simple case of a quarrel gone wrong, Lecoq's keen observation and deductive skills uncover a much more complex plot involving disguise, mistaken identity, and a criminal mastermind. As he delves deeper into the investigation, Lecoq must navigate a web of deceit and betrayal, using his intelligence and resourcefulness to solve the case and prove his worth within the police force. The novel is a seminal work in the detective genre, showcasing the use of scientific methods in crime solving and the archetype of the brilliant detective.