El Triángulo de Hielo

When a frozen corpse turns up on a swing set in a park in the Vallecas neighborhood of Madrid, Inspector Paloma del Moral knows she's dealing with a killer unlike any other. The Frost Man doesn't just kill his victims: he subjects them to a horrific death by hypothermia, leaving behind cryptic messages. As the bodies pile up and the investigation leads the police to the Ice Triangle, the frigid region between Teruel, Calamocha, and Molina de Aragón, Paloma, haunted by the death of her husband and battling her growing obsession with the case, discovers that surviving the Frost Man's psychological games can be just as dangerous as his deadly traps.