This book collects twenty murder cases. All have one thing in common: they horrified and kept the public in suspense for weeks, months, even years. Sometimes due to the violence or extreme cruelty of the crimes; other times because of the difficulties police faced in identifying the perpetrator. The names of killers and victims still echo in the minds of thousands of Spaniards: Arkán, Angles, Anabel Segura, Rocío Wanninkhof. Behind each story lies a series of difficult questions: What hides in a killer’s mind? What does he feel while committing murder? How can a human being come to so utterly despise the lives of others? Luis Rendueles and Manuel Marlasca reconstruct step by step the most chilling murders of the last decade in this meticulously fact-based, yet thrillingly paced work.