In April 1974, 31-year-old Anni Nielsen Iranzo was brutally murdered in her home in Oslo's upscale Holmenkollen neighborhood. The pregnant woman had been severely beaten and was strangled with a rope. The violence with which she had been killed led the police to suspect that the perpetrator was a man. The first suspect was her husband Enrique Iranzo, the Spanish deputy ambassador to Norway, a man with a rather riotous lifestyle. But their four-year-old daughter Maria, the only witness, said she saw a woman sitting on top of her mother.