Latest legal fireworks: New mistrial motion, admitted mistake

"The commonwealth has no case, they have no collision. They are desperate," defense attorney Robert Alessi said in court as he moved for a mistrial for a second time in the Karen Read retrial. Our legal experts explain what happened in court, why Judge Beverly Cannone didn't declare a mistrial and what it might mean for the case. Plus, ARCCA crash reconstruction expert Daniel Wolfe showed video of his test on — did it help or hurt the defense? And who is in charge of maintaining decorum in the courtroom?