Operating alongside his cousin Angelo Buono Jr., Bianchi was part of a killing partnership that preyed on women and girls across the Los Angeles hillsides in the late 1970s, a case that drew sustained national attention. His conduct after arrest — including an attempt to feign multiple personality disorder to avoid conviction — became nearly as studied as the crimes themselves, offering investigators and psychologists an early case study in calculated criminal deception.

Operating across two countries over roughly two decades, Camargo Barbosa targeted young girls with a methodical persistence that allowed him to evade capture for years. His confirmed victim count places him among the most prolific killers documented in Latin American criminal history. He was ultimately killed in prison by a relative of one of his victims.