The administrator of a prestigious rare book society sends a proposal to private detective Leonardo to investigate a possible leak. What the detective did not expect was to find the library administrator dead on the first night of observation. Determined not only to unravel what society really hides among the countless shelves of books, Leonardo will also find himself caught in a web of false relationships and criminal schemes. In order to solve the mysterious murder, the detective decides to document in his diary everything that really happened on the night of Paul's death. Leonardo will discover that in a society there is always more than one culprit. There is always more than what is said. And as much as the evidence is clear, the real criminal is still hiding in the shadows.