The document outlines three potential plot ideas for a story involving the spirit of Mary Ann Cotton, a 19th century British serial killer. The first involves teenagers finding instructions to summon her spirit and being poisoned with arsenic. The second has students summoning her after learning about her in history class, where one is poisoned. The third takes place at a sleepover where the friends summon her spirit after trying other rituals, and one is grabbed by the spirit claiming innocence.