Mirror World

There was once a hotel. The hotel looked innocent enough, the people who ran it were innocent enough. But what happens when they have a magical mirror? They use it to give people things. It all seems okay.   That is until people start disappearing. They sign their names to be able to keep getting objects from the mirror, but they're never seen from again.   Do the people know they are gone? Where did they go? Who are these people who own the mirror? What's going on?