When fifteen-year-old Marilyn Howe turns up alone and frightened on Inspector Ramsay's doorstep he has little choice but to invite her in. Marilyn and her mother, Kathleen, are a familiar sight around Heppleburn, a strangely inseparable couple. But Kathleen has unaccountably failed to return home that evening, and Marilyn is fearful for her mother's safety. Ramsay takes the young girl home, to ...