Careless homeowners?
I know I'm supposed to suspend belief when I watch a movie but I find it hard to believe that anytime someone wants to get it a house, they find an unlocked door. In this movie they didn't even show how Jessica got into Paul's house. I live in a very safe neighborhood and I my doors are always locked.
They also don't seem to have a problem figuring out a password or the combination of a lock.
I think these writers need to work a little harder. Or maybe they don't have to because I still watch the movies.