Friday

Every Friday, a letter. Every letter, a warning. Every warning… a new victim. 

On an ordinary Friday, Chief Inspector Julián González, a seasoned Madrid police officer, receives an anonymous letter announcing a murder. What initially seems like the threat of a madman soon turns into a series of meticulously planned crimes. The victims appear to have nothing in common, yet the killer is adamant: only González can uncover the pattern and stop him. With every letter, the murderer leaves behind a new clue… and another death. 

As González and his team attempt to decipher the killer’s messages, the investigation drags them into the darkest years of terrorism, the shadowy world of corruption, and the unresolved wounds of Spain’s democratic Transition. 

Friday is a relentless, fast-paced thriller in which each crime forms part of a revenge plot set in motion thirty years earlier. In his debut novel, José Manuel Zuleta delivers a tightly constructed mystery that runs like clockwork—a story of guilt, power, and vengeance that exposes the true cost of justice.