Wicked Stepmother

Suggestions:

The Phantom of the Opera The Phantom of the Operetta Slaughter Night Willard The Ghostly Daughter-in-Law

A mother/daughter pair of witches descend on a yuppie family's home and cause havoc, one at a time since they share one body & the other must live in a cat the rest of the time. Now it's up to the family's mother, a private detective, and a suspended police officer to try and stop the witches.