This chapter discusses the uncanny incestuous double in Virginia Andrews’ young adult Gothic novel Flowers in the Attic and its exponential sequels which make up the Dollanganger Saga. Flowers tells the tale of the incestuous Dollanganger children and their incarceration in the attic of Foxworth Hall by their recently widowed mother Corrine and puritanical grandmother Olivia. Siblings Cathy and Christopher are depicted as simulacra of their “perfect” parents and on the surface their inheritance of incest reads like Oedipal wish fulfilment, but I discuss how Cathy’s narrative is driven by a deeper desire for, and revenge against, the pre-Oedipal mother who has abandoned them, an echo of the canonical absent mother plot of the Gothic and a subversive undoing of the heteronormative reproduction of mothering. Sibling incest predicated on desire for the absent mother is exhibited between symbolic twins Cathy and Heathcliff in Wuthering Heights and Pip and Estella in Great Expectations, books the siblings read in the attic, and I explore how Andrews contextualised and validated her depictions through “intercestual” references to these canonical texts as the saga is haunted by the image of the ancestral incestuous double to the point where incest is normalised. This chapter explores how Andrews defied the idea of incest as Gothic Oedipal fantasy hinted towards but left unspoken and invoked literary antecedents to legitimise her portrayal of incest as symptomatic of desire for the pre-Oedipal mother.