The Wilds

After the dark events that scarred her childhood, Kier Templer escaped her hometown and twin to live her life on the road. They've never lost contact until, on a trip to a Portuguese national park, Kier vanishes without a trace. Detective Elin Warner arrives in the same park ready to immerse herself in its vast wilderness - only to hear about Kier's disappearance, and discover a disturbing map she left behind.