sentences:  "Witch's Sister", the first book in the series, was adapted into an episode of the television series, "Big Blue Marble".Eleven-year-old Lynn Morley suspects her older sister, Judith, of witchcraft after a series of odd and unexplainable happenings, such as conjuring up a boy from the local creek.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.