After four days of jury selection, only about 4% of potential jurors are actually seated for the second Karen Read trial. Legal experts explain why finding the right people is a challenge.

I think this is going to be twice what the first trial was, just in terms of magnitude and witnesses,” Karen Read told VF.

Jury selection began Tuesday for the second murder trial of Karen Read, a Massachusetts woman accused of running over her boyfriend, a Boston police officer, after a night of drinking.