The Idaho student murders: new details. Karen Read's voicemails. And Sean Combs's trial begins.

Keith Morrison shares his latest reporting on the murders of four University of Idaho students including exclusive interviews and never-before-publicly-seen video. The retrial of Karen Read is in week three. The prosecution plays some of her final voicemails to John O'Keefe. And jury selection is underway in Sean Combs's blockbuster trial. Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com