The story begins with a bang. A serial killer who has terrorized Chicago for years is finally identified, but he dies in a traffic accident while fleeing the police. The police find a string around his neck containing a box. Inside the box is a severed ear.
The narrative structure of El Cuarto Mono is a high-octane race against time set against the bleak backdrop of Chicago.
He tortures his victims and mails three white boxes wrapped with black string to the families over several days: Contains the victim's ear ( Hear no evil ) Box 2: Contains the victim's eyes ( See no evil ) Box 3: Contains the victim's tongue ( Speak no evil )
When you purchase the , the experience is visceral. You hear the detective's weary voice juxtaposed against the cold, calculated tone of the killer. However, early releases of the audiobook (the "v1" M4A files) had a technical flaw. Because the killer’s diary entries are meant to feel like recorded confessions, listeners found that chapter transitions were too clean.