Tech mogul's alleged killer takes the stand. Dentist's murder trial set to begin. Plus safety tips for holiday travel.

Tech exec Bob Lee's accused killer, Nima Momeni, takes the stand for three dramatic days in San Francisco. In suburban Denver, dentist James Craig is accused of putting potassium cyanide in his wife's protein shakes. He was arrested the day after Angela Craig died, pleaded not guilty, and his trial is set to begin in early December. Plus Vicky Nguyen is back with helpful tips — this time for safe holiday travel.

Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com