After a long hard day, the hero comes back to his home. Except, something about the house looks a little different. Maybe a different car in the driveway, bars on the windows, or the back fence is locked.
When the hero gets in the house, they quickly realize that while this might be their house, this isn't their family inside. Either due to an alternate timeline, or a Mind Screw
, the right house has become the wrong house.
Can also be used when going to what was supposed to be a friend's house, to find that the friend never lived there in whatever timeline the hero has ended up in.