Police later conclude she was a BTK victim. ¢ Oct. 22, 1974: The Wichita Eagle-Beacon gets a letter from someone taking responsibility for the Otero family killing and including crime scene details.
Oklahoma officials may have tied a cold case disappearance to the infamous BTK serial killer. Dennis Rader, 78, is serving 10 consecutive life sentences after pleading guilty to 10 murders in 2005.