The Malayalam mystery thriller 'Eko,' now streaming on Netflix, centers on the search for a missing dog breeder, Kuriachan, in Kerala. The plot unravels dark secrets involving his Malaysian wife, Malaathi (Soyi), and her trained dogs. Kuriachan betrayed Soyi and her husband during a trip to Malaysia to obtain a rare dog breed. Decades later, Soyi, seeking revenge for past trauma and betrayal, uses the dogs to imprison Kuriachan and is implied to be responsible for other deaths, including Mohan Pothan's.