Help me to find a movie by description
Okay, now plot of the comedy is:
A young married couple moves in into a big house, in that house lives an old lady.
She's like living HELL.
Now the guy has to write a novel for his job but somehow that old lady destroys his laptop with the story. That's one thing I rememer.
That old lady is pretending to be helpless and all, but in end it turns out she ruens the lives of everyone who moved in into that house. She is working with a policeofficer and they are making money like that
Young couple comes to an idea to kill the old lady and they're trying it on all the way, but not successful.
Later she pretends to be dead, and they feel sorry for her and decide to move out.
I know this is not good description but I watched it few years ago so I don't remember well :O
But I hope someone knows what I'm looking for :)