You are needed.
A friend of yours, Larrabbold, has just purchased a large, expensive manor — sight unseen.
He went there only to discover it was haunted. He is not an experienced fighter (he is not a fighter at all, in fact), so he is offering you 1000 gold pieces to "de-haunt" it for him.
Before you go he warns you that the previous owner installed many devious traps and secret doors are abundant.