In 2003, Piper and Leo agreed to go see a marriage counselor because they were fighting a lot. When the doctor wanted to start at the beginning and asked Piper about her childhood, she froze him because she was impatient. She then cast a spell to help them through their memories and unfroze the doctor. As they continued the session, Piper and Leo both relived their memories, unaware that Phoebe and Paige were forced to relive them as well while trying to stop a Familiar Hunter from killing Kit.
The relived memories allowed Piper and Leo to grow closer together quickly, much to the surprise of the doctor. When Leo suddenly felt pain, Piper froze the doctor again and Leo informed her that witches were being killed. Her sisters them told her to relive the last memory, so they could vanquish the warlock. After the warlock was vanquished, Piper quickly undid the spell.
Dr. Berenson appeared in a total of 1 episode over the course of the series.
- Season 5
- Cat House