Big crowds are expected in Dedham tomorrow as a hearing is held on a motion to dismiss charges against Karen Read. 

A mistrial was declared in Read's murder, manslaughter and leaving the scene of a deadly crash trial in connection with the death of her Boston cop boyfriend John O'Keefe in Canton. 

The defense says they have learned that jurors were unanimous not guilty on the murder and leaving the scene charges, and were only hung on manslaughter. 

Read supporters and those who think she's guilty are both actively recruiting people to protest at the courthouse tomorrow.