Synopsis: Beautiful and enigmatic, the young lawyer Eloisa Ángel is an authentic femme fatale, of an extraordinary intelligence, fascinated by serial killers of whom she is writing a book.
In order to do so, she contacts a journalist, a lawyer, and a politician who in the brink of old age is about to become the mayor of Zaragoza. She takes advantage of them, and all, attracted by her sensuality and murky past, she manipulates.
One spring morning, the city awakes with the news of Eloisa's brutal murder. The subsequent investigation will uncover the human miseries and also the unleashed passions beneath the apparent quiet life of provincial capitals.