Luiz Baú (born June 21, 1939), known as The Monster of Erechim, was a Brazilian serial killer who achieved notoriety in the 1970s for committing five murders in Erechim and Itatiba do Sul. Born in the district of Sete Lagoas, in Itatiba do Sul, Baú was a farm worker who engaged primarily in agricultural activities, but also posed as a medicine man. After divorcing his wife, possibly due to contracting mumps and becoming sterile, Baú moved to Linha Jubaré, in the home of a widowed woman with seventeen children. He developed a close relationship with one of these children, and after discovering that the boy planned to move to Garibaldi to study at the Seminary, Baú murdered him in a particularly cruel fashion. He was diagnosed as a schizophrenic by doctors at the Forensic Psychiatric Institu