Enigma

They have never forgotten each other. He's a failed serial killer; she, the victim who managed to escape from his clutches. And now that he's found her through a viral video, he's not going to let her get away again. Nina Guerrera, turned FBI special agent, will follow the trail of the man from her nightmares, while he spreads complex codes and enigmas on social networks in a devilish game of cat and mouse in which the whole world watches and participates.