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.

DEDHAM, Mass. (AP) — Jurors in the murder trial of Karen Read began deliberations without a verdict Friday after weeks of testimony in a highly divisive case in which the prosecution’s theory of jaded love turned deadly was countered by a defense claim that a cast of tight-knit Boston area law enforcement killed a fellow police officer.