The release of Luisgé Martín's book "El odio," exploring the psychological profile of convicted murderer José Bretón, has sparked heated debate.

Bretón, who killed his two children in 2011, is the focus of this true crime work, which has drawn criticism from the victims' mother, Ruth Ortiz.

Ortiz argues that giving voice to the killer revictimizes her and amplifies her pain.

The book's publication has also raised ethical questions about the balance between societal interest in understanding heinous crimes and the rights of victims to avoid further harm.

Critics warn of the risks of sensationalism and humanizing criminals, while supporters argue that such works can foster societal reflection and awareness.

The controversy highlights the ongoing tension between storytelling, ethics, and justice in the true crime genre.