Biography: Catrine Beatrice da Costa, born Bäckström, was a Swedish woman who was brutally murdered in June 1984. She was married to the Portuguese Jose da Costa with whom she had a son. They lived in Coimbra, Portugal, and Stockholm, Sweden. Catrine da Costa was last seen on Malmskillnadsgatan in Stockholm on June 10, 1984. One week later, on June 18th, the dismembered parts of her body where found in plastic bags, spread out far apart. How she died has not been established, since vital organs and her head has not been found.