Tahnee Welch,Lee Anne Beaman in Improper Conduct (1995)

The Chairman of an advertising company announces the new corporate manager at the company Christmas party - his son-in-law. This is a nightmare to the long time employees, but the nightmare increases when he sexually harasses the good looking women in the company. But after he assaults one in an elevator, she decides to fight back. Hiring an attorney, she takes him to court - and loses. Because of her desperation, she ends up being killed in an auto crash. Her sister then goes undercover at the company to take revenge on the manager.