<P> Frank's older brother Eric escapes a mental institution in the opening of the book, having been arrested some years prior for setting fire to the town's dogs and terrorizing local children by force - feeding them maggots and worms . Eric often calls Frank from phone boxes to inform Frank of his progress back to the island . Eric is extremely erratic; their conversations invariably end badly, with Eric exploding in fits of rage . Frank is confused as to whether or not he is looking forward to seeing Eric, but it is clear Frank loves his brother . </P> <P> The "Wasp Factory" that the title refers to is a mechanism put together by Frank, made from a huge clock face, salvaged from the local dump, encased in a glass box . Behind each of the 12 numerals on the clock face is a trap which leads to a different ritual death (for example burning, crushing, or drowning in Frank's urine) for the wasp that Frank puts into it via the hole at the centre of the clock face . Frank believes the death "chosen" by the wasp predicts something about the future . The Factory is in the house's loft, which Frank's father cannot access because of a leg injury . There are also "Sacrifice Poles". The bodies and heads of animals, such as mice that Frank has killed, are stuck onto the poles for the purpose of attracting birds which will fly away and alert Frank of anybody approaching the island's borders . </P> <P> It is revealed that when Frank was much younger, he killed three of his relatives: two cousins and his younger brother . He also exhumed the skull of the dog that castrated him, and he uses it as part of his rituals . </P> <P> Eric is described as having been extremely sensitive before the incident that drove him mad: a tragic case of neglect in a hospital where Eric was a volunteer when studying to become a doctor . While attempting to feed a brain - damaged newborn with acalvaria, Eric notes that the child is unresponsive and smiling, despite usually appearing expressionless . The child's skull is held together by a metal plate over its head . Eric checks underneath the plate to find the child's exposed brain tissue infested and being consumed by day - old maggots . </P>

Who does frank kill in the wasp factory