Question: Actress Name........

I need help pinning down the name of the actress who played a psychologist or psychiatrist in I think 1 episode. The one that dealt with the 3 rich kids who beat a man to death at a drug and sex party. He had gone there to save his daughter. I've gone thru the cast list on IMDB several times and for some reason can't figure out which actress is her. I'd like to find out what other movies/tv shows she's done.

Thank you.