Strangled Woman Movie Name This OLD Black & White Horror Movie, Please!?

Name this OLD Black & White Horror Movie, Please!? - strangled woman movie

I saw this short film as a child, and I do not remember much detail in every scene, with one exception. In this scene, speak a very attractive woman on the stairs, and a girl with her and she seems in danger. So, the girl hugged the woman and the woman was strangled the girl, but when he is committing to is to stop yourself.

That's all I remember, unless the woman had dark hair and kind of looked like Vivien Leigh.