In the midst of a troubled marriage, police inspector Amaia Salazar is sent to her hometown in Navarra, Spain, to investigate a series of murders of teenage girls whose bodies are found naked and mutilated in the forest. As she delves deeper into the case, Amaia must confront her own dark past, including her troubled relationship with her sisters and her childhood trauma, all while facing the possibility that the killer may be someone close to her family.

The Invisible Guardian
As a detective struggling to overcome her troubled past, she must face her inner demons while racing against time to capture a ruthless serial killer whose sinister presence threatens to destroy her fragile hold on justice.