She-Wolf of London

She-Wolf of London (also known as Love and Curses) was a 1990 - 1991 British/American syndicated television series produced by Harlech Television and distributed by Universal Television. It starred Kate Hodge as Randi Wallace, a young American woman who is attacked by a werewolf whilst studying in the United Kingdom, and subsequently becomes a werewolf herself. With the help of her professor, Ian Matheson (Neil Dickson), she searches for a cure while using her new werewolf abilities to fight various evil supernatural entities.

After fourteen episodes, the story (and production of the series) moved to Los Angeles, and the series was re-titled "Love and Curses." Six episodes were produced under the new title before the series was cancelled.

Big Top She-Wolf (Season 1, Episode 11)
The ringmaster of a circus is able to prevent Randi from transforming during a full moon. He offers to make the change permanent, curing Randi of her lycanthropy forever, but only if she sells her soul to the Devil. When she refuses, he hypnotizes her and attempts to sacrifice her to the Devil anyway.