The three surviving children of Titus W. Merrye, live in a dilapidated mansion where patient servant Bruno watches over the increasingly eccentric Virginia, Ralph, and Elizabeth. All three Merrye siblings suffer from "Merrye Syndrome," a neurological ailment that begins to manifest itself at the age of ten, causing the brain to slowly decay and sending its victims into an alternately violent and infantile state.
Two distant cousins, Emily Howe and Peter Howe, who are interested in laying claim to the family mansion and any money remaining in the Merrye Estate. But not long after they pay a visit to Bruno, they start to have serious regrets about their decision to see the family.
Shot in 1964, Spider Baby sat on the shelf until 1968, when it was briefly released as the second half of a horror double-bill on the drive-in circuit. The film has also appeared under the titles Cannibal Orgy and The Liver Eaters, as well as Spider Baby, or the Maddest Story Ever Told.
