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.

For the second time in a week, Judge Beverly Cannone denied Karen Read's attorneys' request for a mistrial after they accused the prosecution of misconduct.

For weeks, all appearances were that prosecutors would call witnesses as part of a brief rebuttal case in the Karen Read retrial, giving them the opportunity to get the last word after damaging testimony from expert witnesses for the defense.

Biomechanical engineer testifies injuries inconsistent with taillight impact in Karen Read murder case, after judge interrupts his birthday message.