So many questions! SPOILERS
*******SPOILERS*********
Did the dad have an affair with all the babysitters? Because the wife wasn't bothered by it at all.
Why was Jonny calling her mommy? ... He wants to kill his mother but can't, so murders the babysitters instead? And if so, why does he want to kill her?
It's his dad who is trying to get rid of him, not his mother.
Was the doctor grooming Billy too? Or was it in her head?
Anyway, it reminded me of a cross between Orphan and The Hand That Rocks The Cradle
7/10.