 The detectives meet with the girls' (Carmen and Estrella) father, Rodrigo, a local riverboat skipper.Although Rodrigo and his wife Rocío say their daughters were average girls, the duo hear from the local police that they were known for their promiscuity, and from their friends that they had a deep urge to leave the town.Rocío also gives the detectives a burnt film reel she's found, depicting the girls naked and in bed with a man whose face is obscured by a flash.