After hearing allegations that Read's lawyers concealed a financial arrangement with expert witnesses, the judge warned of "profound effects on this defense and defense counsel.”

Karen Read has taken her double-jeopardy challenge to toss the murder charge against her to federal court on the same day a lower-court judge said she has “grave concern” about the

The latest dramatic turn in the Karen Read case centers on expert witnesses in the first trial who may have falsely denied being paid by her defense. Why it matters: The case has taken so many twists and turns since Read's first trial ended with a hung jury,