Ha!
Well, my main character, Grim Reaper Griffin, would probably first message the Council, informing them there are free-roaming souls in his location.
Then while support was on the way, he would whip out his Soul Chain and start hunting down the ghosts. Trying to trap them, and once they have all been collected escort them to their new destination in the next life
If it was any of the other characters, they would probably do the same. Oh and if there is suspicion of a demon being at play, they would probably call on an angel to come help them fight the demon
or fight it themselves if it was one of the archangels.
Probably the perfect location for my characters to be in!