Anthony Sanchez, right, is escorted into a Cleveland County courtroom for a preliminary hearing in Norman, Okla., on Feb. 23, 2005. The Oklahoma death row inmate convicted of raping and killing a University of Oklahoma dance student in 1996 is seeking to have his death sentence thrown out, alleging in a court filing Friday, Feb. 3, 2023, that his late father is the actual killer. (Jaconna Aguirre/The Oklahoman via AP, File)