Secret Mansion

[VinceDoug]

How do I open the middle door in the mansion?The one who Random says is "tightly locked".

[Mystsong]

Defeat the elder ghost in the party room beyond the right door to get permission to pass the living door, got in there and look around a bit, talk to people, one of them will give you a clue about a lever that will open up another path in the room, that leads to where you'll get the key.