The woman lavishes treats and gifts on Bart, including a pet python, and eventually tells him that she is in fact his grandmother, Corrine.
Bart reads Malcolm's fanatical entries and writings, referring to beautiful women as sinful and degrading, which begins to leave a deep impression on him.
However, Cathy insists that she is only creating a back-up plan in case her and Chris's incestuous secret is ever exposed and they face the possibility of losing the children.
She pleads with Chris to adopt Cindy, one of her ballet students, whose mother has died from cancer, and he agrees in order to calm her down about losing their family.
Bart soon goes missing and the family discover him unconscious in the woods due to an infected cut on his arm, leading him to be hospitalized.
Bart starts to suspect that his parents are keeping secrets from him, and he confronts Corrine over a painting of a boy who resembles Chris since he believed she had never met him.
Bart is placed in a mental hospital and claims that it was Malcolm who tried to drown Cindy, leading doctors to suspect that he suffers from a mild case of schizophrenia.
However, she has learned about Chris and Cathy's true relationship and threatens to turn them in to the police for incest, wishing to take Jory into her own custody.
Cathy is put on edge and argues with her, but Marisha insists that Jory's current living situation is unhealthy for him and points out how "nuts" Bart is.
Corrine pleads for forgiveness, but Cathy rejects her and blames her for ruining the life she and Chris worked so hard to build and maintain.
Corrine manages to stab him with an arrow which gives Bart enough time to escape, but she is unable to do likewise and burns to death alongside Amos.
Realizing how much he loves his parents despite their history, Jory decides to remain with them and threatens his grandmother Marisha that he will never forgive her if she reports Cathy and Chris.