Restless Souls

But it won't be easy to open it. Souls are guarding it - the dead that are aimlessly wandering the halls of the tower. They are around us, see?
Of course you don't. I'll teach you. Go now - and free them.

There they are, whirling around the room! Echoes of lives past... That ghost tricked them so it could hide in its lair.
But now they'll help us.