Director Miguel Alcantud's nail-biting thriller stars Ana Risueño as Sara, a young lounge musician coming to grips with the loss of her partner. When she suddenly becomes the only witness to a gruesome killing, the enterprising Sara opts to blackmail the murderer (Daniel Freire). But she gets more than she bargained for when she finds herself attracted to the killer -- and caught up in a potentially lethal game of cat and mouse.