Body Of Proof - Society Hill

A woman is found dead in a pool but not from drowning and the only evidence of the killer is some hair.  The woman was an editor for a society magazine who had a number of enemies.  She was mean to her staff so it could have been any of them.  What relationship does she have with her assistant and could it have been him?  And how does a wealthy man who once paid to have the dead woman beaten figure in the story?
To get access to the wealthy man, Dr Hunt agrees to attending a society event with her Mother, played by Joanna Cassidy, whom she doesn't get along with.
Lots of red herrings but a pretty run of the mill episode this week.