Lynn and her friend, Marjorie "Mouse" Beasley, soon realize that Judith is under the influence of an eccentric old woman, who is developing a plan to murder the girls' five-year-old brother, Stevie.
In Witch Water (1977), Lynn Morley's best friend, Marjorie "Mouse" Beasley, becomes prey to her eccentric, elderly, neighbor, the morbid Mrs. Tuggle, after the separation of her parents.
In The Witch Herself (1979), Lynn Morley's mother, Sylvia, becomes vulnerable to Mrs. Tuggle's witchcraft after renting a writing studio from her.
In The Witch Returns (1992), an old woman moves into Mrs. Tuggle's newly re-constructed house, and she bears a striking resemblance to the former inhabitant.
Lynn Morley fears that the witch may have returned to haunt their sleepy, Indiana town.