Y sin embargo, fue un crimen

Sara Mir Ortiz disappeared during the Halloween party held in the exclusive La Quinta residential complex. However, no one seems worried, except for Polo, a classmate who's in love with her (although, it must be said, with no chance of being reciprocated). The boy decides to go to the police station to report her disappearance, even though Sara's powerful family and the administration of her posh school insist that she's away on a trip. As it happens, the report lands in the hands of Inspector Aurora Pardiñas, and, wouldn't you know it, she decides to investigate...