There have been many silences in Spain's recent history. The journalist Roger Mateos (Barcelona, ​​​​1977), who has dedicated many years to investigate and explore the greyest and darkest areas of Franco's regime, decided to uncover new secrets after learning of a conversation. Xosé Humberto Baena, a member of the Revolutionary Anti-Fascist and Patriotic Front (FRAP), had it with his father shortly before he was shot on September 27, 1975, fifty years ago. The father needed the truth, and asked his son to tell him, although if he told him they had shot an innocent man, it would be more painful. "I'm sorry, Father, but I can't give you that consolation. It wasn't me who killed him," was the response of the young Galician anti-Francoist who was about to turn 25. Mateos believes in Baena's innocence; he has the information to prove it. The Summer of the Innocents: The Secret of the Last Man Executed During the Franco Regime (Anagrama) is a years-long investigation into what happened on the day of the murder of police officer Lucio Rodríguez, for which Baena was convicted and killed.