A native Iowan has made a deathbed confession to being a serial killer. Aformer Ames man who’s dying of brain and lung cancer has reportedlyconfessed to four murders. Colorado authorities are holding 67-year-oldRobert Spangler. Spangler allegedly admitted killing two of his four wivesand two of their children since 1978. He’s only expected to live another three weeks.Spangler graduated from Ames High School and attended Iowa State University.His late father was an I-S-U professor and an Ames City Council member. In one incident, Spangler says he shot and killed his wife and two children, then made it look like the wife had done the shooting and killed herself. In the other case, Spangler claims another wife was thought to have accidentally fallen to her death at the Grand Canyon — but he says he pushed her.