Rochester N.Y.-The defense has rested in the trial of Clayton Whittemore, who's accused of second degree murder in the beating death of Alexandra Kogut.

Defense attorney Mark Curley and Prosecutor Sandra Doorley alternated in questioning and cross-examining a defense psychiatrist -- who laid out the theory that Whittemore "snapped" and killed his girlfriend as a consequence of years of beatings and abuse at the hands of his father. Dr. Rory Houghtalen said the crime was not an act of pure anger.

Doorley has tried during her case and cross-examinations to show a pattern of increasingly violent behavior by Whittemore, culminating in the 2012 murder in Brockport.

The jury may get the case today.