Haunting House 4 expansion - They just don't build 'em like they used to

The house doesn’t look like it’s going to be standing much longer and the only place you haven’t explored is...
The basement! Not that you haven’t tried. You just haven’t found the key. It has to be in the house somewhere, doesn’t it?

You and your hoodlum friends have decided to hit the Breitenstein house one last time. This time around the goal is the same...Well, there might be one slight difference... Unlocking the basement seems to have set something free...something evil!!!