 It is revealed that the riverboats and marshes are being used to smuggle and transport heroin, and that Rodrigo had stolen a kilo and sold it, getting him in trouble with the locals.However, the locals involved in the drugs seek out the detectives, revealing their participation in drug smuggling in full but claiming they had nothing to do with the sisters' deaths.One of the men does aid the investigation, however, by describing a white Dyane 6 he saw at the church where one of the girls' purse was found.