The formidable Miss Mary Sutherland consults Sherlock Holmes about a mysterious and elusive suitor. She tells her story from Watson’s ancient Egyptian chair, the Mummy Couch, but he is more worried about her hefty derriere breaking the antique heirloom than her missing lover. Later on, Watson is introduced to Holmes’s parents for the first time and discovers he has an amorous admirer in Sherlock and Mycroft’s sister, Rachel.