At this point,Kelsey's boyfriend, Jon, starts to get involvedin the argument. Diana tells...

[Newberg] At this point,
Kelsey's boyfriend, Jon, starts to get involved
in the argument. Diana tells police that
Jon runs upstairs to where Thomas
had closed the door and tried to lock
himself in this room. And Diana says that Jon is armed
with a baseball bat... ...and is trying
to break down the door. Diana sees Jon
go into the room
with the baseball bat. Diana says that,
at that point, Dr. Burchard was
clearly injured, his eye sort
of black and blue. [Newberg] There's a large bruise on Dr. Burchard's head, and that he's
clearly disoriented. So, he starts to say that, like, "I need to go
to the hospital."