The Perfect Nanny (2000)
After she is released from a mental hospital, a woman obsessed with romance novels takes a job as a nanny to a handsome widower and will kill anyone who stands in the way of her becoming his wife
The Invited 2015
A young married couple who are pregnant with their first child moves into their turn of the century home where they discover that a great evil has resided there for nearly a century, unleashed by a previous occupant