House in the Hollow — Ethel Lockwood

Not for Judith the dull routine of an office job or the pallid joys of domesticity --at least until she had tasted excitement and adventure. So she eagerly answered an ad for a mysterious job in an isolated region without even being certain what her duties were supposed to be. Thus she found herself entangled in a web of intrigue which was both more perilous and less fulfilling than the thrills she had anticipated, and brought her at last to a somewhat overdue maturity.