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.

Tuesday marks Day 30 of witness testimony in Read’s second trial. Attorneys are expected to argue motions, including what the defense’s next ARCCA witness will be allowed to testify before Dr. Elizabeth Laposata returns to the stand.

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.

A key Karen Read defense crash reconstruction expert testified that damage to her SUV — the alleged murder weapon — and wounds to boyfriend John O’Keefe’s arm are “inconsistent” with a vehicle