This week on Headline Highlights: An Oklahoma stepfather who impregnated his 11-year-old stepdaughter has been sentenced to life in prison. New court documents allege that three women attacked and fatally stabbed Texas mother of five Caroline Peña, and all three now face murder charges. More than six months after 20-year-old Ethan Vernon was found dead in a burned truck in Ohio, his girlfriend and her parents have been indicted in connection with his death. After a shocking discovery in an Illinois lake, a man’s brother and sister-in-law were arrested after investigators uncovered disturbing details about his death. And a shocking New York murder case has taken a disturbing turn after a beloved teacher was accused of killing his young sister-in-law inside their family home…