The term "Dollanganger" refers to a fictional family from the popular book series by author V.C. Andrews. The series begins with the novel "Flowers in the Attic," which tells the story of the four Dollanganger children who face tragic circumstances after their father's death. They are raised in a secluded mansion by their mother, Corrine Dollanganger, who harbors dark secrets. The Dollanganger saga explores themes of family, betrayal, and survival. The series follows the lives of the children, particularly Cathy Dollanganger, as they navigate their troubled upbringing and the impact of their mother's choices. The books have gained a cult following and are known for their dramatic and controversial content.