A Problem Shared is a Problem Doubled

Mary is given a body piercing kit but since there are no instructions with it the results are less than satisfactory and she sells it to Jeff. Angela meanwhile is troubled to see that her old headmistress Miss Peppard, who humiliated her in front of the whole school by making her do a cross country run in her undies, is in the village and Mary has to stop her from killing the old lady.