Details of the investigation into the Delphi Murders trickle out in court. And what the jurors are shown is disturbing. In the trial of the man accused of killing a tech executive, the defendant's sister undercuts his theory -- and the prosecution's. Khazar Momeni has been on the stand all week. Plus Sarah Boone, charged with killing her boyfriend by zipping him into a suitcase, is testifying. And NBC News's Vicky Nguyen is back with advice for your kids as they roam the streets in costume. Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com