Augusto Pinochet Henchman Eugenio Berríos Caught in 'Black Cocaine'  

A dandy, simpático, intelligent, a bar room singer who could belt out “Malagueña,” and a drug addict, murderer and cocaine cook for Augusto Pinochet: Few figures are more synonymous with the heinousness of the Chilean dictator’s regime than his go-to chemist, Eugenio Berríos, last seen as a skeleton discovered buried in Uruguay’s Pinar Beach in 1995.

Presented at this week’s Sanfic Industria in its Work in Progress section, “Black Cocaine” (“Cocaina Negra”), the latest doc feature from Chile’s Cristóbal Valenzuela (“Stealing Rodin,” “Alien Isle”), proved one of Sanfic Industria ’s biggest winners, scooping two of its WIP contest’s most important prizes.

That can be put down in part for achieving a coup, locating tapes recorded by Berríos himself, which range from a banal phone call w