To be honest learning about Serial Killers, Mass Murderers and being part of the True Crime Community, Is probably the best thing that has ever happen to me.
Where does the director get the idea that Katherine was driving the car when he went to the market? In court, it was implied that Tamerlan was driving and that Tamerlan insisted Jahar change the milk. How bizarre. Also, as if Jahar is in any position to communicate with anyone outside immediate family. Talk about fake news!