Last week, Rob Lowe filed a lawsuit against three former employees. The star of Brothers and Sisters says that one of these former employees, former nanny Jessica Gibson, wanted $1.5 million to remain silent about allegations of abuse.

Gibson, who worked for Rob and Sheryl Lowe on and off for seven years, filed a claim in Santa Barbara yesterday. She claims that the actor sexually abused her on numerous occasions from September 2005 to January 2008. Why did she stay for so long? "I always thought it would be different when I went back, but it was not. I stayed as long as I did because of the children and because I needed a job," Gibson explained. Her lawyer added that if the Lowes think that sueing Gibson as a pre-emptive strike will intimidate her, "I can assure them it will not." Gibson's countersuit seeks an unspecified amount of damages.