'The Silence') is a Spanish psychological thriller television series created by Aitor Gabilondo starring Arón Piper.

He has been temporarily mute during his childhood following to a traumatism and has recovered his faculty of speech only when his parents adopted a little sister.

He has spent six years in detention for parricide and is now under the secret watch of a young psychiatrist, Ana Dussuel, and her team.

During the course of the series, it’s discovered that Sergio is a genius quick to anger and that his mother, a psychiatrist, was experimenting on him without his father's consent/knowledge.

Towards the end we find out that Sergio is unstable and was on drugs and lashed out and pushed his parents over the balcony of their apartment to their death.