by investigative journalist Fernando Rueda is a compelling deep dive into the evolution of Spain’s intelligence services. Published by Roca Editorial , this non-fiction work serves as a sequel to his 1993 bestseller, updating readers on the transition from the CESID to the modern CNI (Centro Nacional de Inteligencia). Key Highlights

The book uncovers hidden details regarding Spain's fight against ETA , counter-terrorism efforts against jihadism, and foreign espionage threats from nations like Russia and Morocco.

It provides a rigorous critique of the CNI’s failures and the questionable behavior of some directors throughout its history. Reader & Critical Reception

Reviewers from Periodista Digital and El Español have hailed the book as "essential" for understanding the "sewers of power" in Spain. While some readers on Amazon find the structural similarities to the first book a bit repetitive, most appreciate the update on recent historical episodes, such as the intelligence service's complex relationship with the monarchy and the Catalan independence movement.

Rueda explores the motivations, fears, and daily lives of agents operating "behind the mirror".