This, the second of the 'Baztán Trilogy, opens nine months after the events depicted in 'The Invisible Guardian. Police officer Amaia Salazar is in court a man accused of murdering and mutilating his step daughter commits suicide; a note baring the single word 'Tartallo' is found in his pocket. The shock causes Amaia to go into labour; she gives birth to a son, Ibai.

Four months later she returns to work and is soon investigating two cases which, on the face of it are quite different; a suicide in prison where the man wrote 'Tartallo' on a note to be passed to Amaia; and the desecration of a church where the arm bones of a baby were left on the alter. Inevitably she establishes a link. We also learn the meaning of Tartallo; a mythical being from the time when the Inquisition was persecuting those who still held on to their pagan beliefs. As the investigation progresses is becomes more personal for Amaia as she and her baby son are placed in real danger. To make matters worse the river waters are rising, threatening to flood the town.

I enjoyed 'The Invisible Guardian' so was keen to see this; if anything I enjoyed this even more. No time is wasted reintroducing key characters, so I'd certainly recommend watching 'The Invisible Guardian' first even though this features a new case. Once again there is a great atmosphere; the rain and rising waters later on only add to the sense of danger. Elements of the case are somewhat disturbing but nothing graphic is shown. As the story progresses we learn quite a lot more about Amaia's family history; things she didn't know about. The cast does a solid job, most obviously Marta Etura, who plays Amaia. Overall a solid second instalment in the trilogy; I'll certainly be watching 'Offering to the Storm' fairly soon.

These comments are based on watching the film in Spanish with English subtitles.