Pure Evil

Criminologist Daniel Parodi is woken when the nursery rhyme whistled by his daughter's killer during her murder plays on his computer. Realising the killer isn't done, he assembles a team to hunt him.

Malena Sanz reveals she has met Amalia, a woman with a sect tattoo claiming to have escaped white slavery. Attorney Diana Quaranta asks Parodi's team to verify the suicide of alleged slave boss Funes.

Malena and Montes track down Amalia, persuading her to testify, but then she runs away. Montes and hacker Diego find the key to the riddle in a literary text. Can they predict the Monster's next move?

When a patient of Marcos Setton, Parodi's psychologist, jumps from a balcony, Setton receives a cryptic communication from a messenger paid with forged money. The team get a shock at Funes's grave.

Parodi finds Quaranta raped at the swimming pool with another quotation written in her blood. He follows a lead to meet with head counterfeiter The Artist, but what he encounters is far more horrific.

The team identifies a licence plate reflected in a window in one of the crime scene photos. This leads to the brothel described by Amalia, but all they find is another message and a home-made bomb.