CNN highlights about a dozen witnesses called over the last eight weeks, whose testimony illuminated key pieces of the theories presented by prosecutors and Read’s defense.

Jurors began deliberations Friday in the murder trial of Karen Read, who is accused of backing her SUV into her Boston police officer boyfriend, John O’Keefe, and leaving him for dead. Six jurors were selected at random to be alternate jurors. The remaining 12 jurors, seven women and five men, will decide the case.