Agnes Lenz

Agnes Lenz is one of two killers in the remake of the classic horror film Black Christmas, along with her brother/father Billy. She also may be a killer in the original Black Christmas, but this is not revealed in the film.

1974 film
In the originally Black Christmas, Agnes is never shown but is talk about heavily. Her older brother Billy makes obscene phone calls to the girls of a sorority house. He references events in his past over the phone. From what he reveals, it is assumed Agens was sexually abused by Billy when she was very young. He then apparently hid her from their parents and her parents couldn't find her. It appears as if Billy is obsessed with his sister.

It is never revealed, but it may be that Agnes is helping Billy kill the sorority girls (this is the plot of the remake). The only evidence of this is due to the fact that it often appears as if there are TWO voices on the phone calls, one from a man and one from a woman.

2006 remake
In the remake, Agnes has a much larger role. It is revealed she is the inbred daughter of Billy in their mother. When she is young, her eye is ripped out in a furious rage by Billy, followed by Billy murdering their mother. She is then sent to an orphanage where she is never heard from until the events of the film.

While Billy is institutionalized, she goes back to her old home, now a sorority house, and hides in the attic. When Billy escapes he joins her at the house where the two becomes murderous partners. The two of them murder almost all of the girls and bring their corpses upstairs so they can have a "family" for Christmas. When her identity is revealed, she is shown all scarred from the attack by Billy in her past.

She is later killed when one of the soroity girls electrocutes her with a defibrillator.