Apr 2, 2015 - 30m
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.
Apr 7, 2015 - 30m
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.
Apr 9, 2015 - 30m
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?
Apr 14, 2015 - 30m
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.
Apr 16, 2015 - 30m
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.
Apr 21, 2015 - 30m
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.
Apr 23, 2015 - 30m
Using new clues from a literary text, the team predict that the Monster is going to commit suicide in a German church. But when Parodi confronts his tormentor, the situation is taken out of his hands.
Apr 28, 2015 - 30m
During the autopsy, a note on Amalia's body explains the how but not the why of the crimes. At the swimming pool, a mysterious woman tries to seduce Parodi, but a very revealing call interrupts them.
Apr 30, 2015 - 30m
The team track the man who was used to fake Funes's suicide. When the Monster's killer is revealed, it seems Parodi's past actions are the key. Quaranta is prepared to act as bait to catch her rapist.
May 5, 2015 - 30m
Lydia invites Parodi out. Setton, Quaranta and Parodi hatch a plan to catch the rapist. A romantic spark between Setton and Malena is revealed. Amalia's parents leave her laptop for Diego to examine.
May 7, 2015 - 30m
A case of mistaken identity puts the hunt for the rapist in jeopardy. Diego discovers the car in the window belongs to Funes's brother-in-law. Malena goes to bed but an unwelcome visitor is waiting.
May 12, 2015 - 30m
Diego tells Malena how he feels but events take a hideous turn, with consequences for Montes. A cover-up begins with Lydia's help. Parodi suspects that Malena is part of the sect when she disappears.
May 13, 2015 - 30m
Parodi and Diego seek Montes's notebook but find nothing. Setton is convinced Diego's hiding something, but Parodi won't hear of it. When Parodi leaves, Diego confesses to Setton and a fight ensues.
