Mother, who deeply mourns but hides her pain from the children, starts to degenerate with an unspecified illness. Jack and Julie continue their teenage arguments, under-pinned with a barely restrained sexual tension which threatens to burst forth. Burdened by hormonal changes, Jack masturbates compulsively and fantasizes of erotic couplings with Julie. Mother is aware of his fixation (warning that each orgasm is the equivalent of losing two pints of blood) but seems blissfully unaware of Jack and Julie's relationship. As Mother deteriorates, becoming bed-ridden, she places growing responsibility with her eldest children (which Jack resents). Eventually she arranges to enter hospital for some tests, making sure that the children won't be taken into care by providing financial security. However, she dies before being able to leave. Distrustful of the authorities, Jack and Julie entomb her body in cement, in the basement.
Free of restraint, now that it's the school holidays, Jack and Julie are able to venture further down the path of becoming surrogate parents to Sue and Tom. The house takes on an air of chaos, littered with unwashed crockery and half-eaten tins of beans. Jack descends into a science-fiction fueled fantasy land, dreaming of escape, glory and success. Meanwhile Tom can indulge his fantasy of being a little girl, with eager help from Julie and Sue, by dressing in skirts and a blonde wig. Within the confines of their world, heavy with emotional undercurrents, this behaviour seems almost normal. The spell is broken though when a shiny red sports-car appears outside the house, owned by businessman Derek (Jochen Horst). Julie has found an object for her flirtations, which drives Jack to distraction. The family, such as it is, seems to be teetering on the edge of a precipice.
In a film such as The Cement Garden atmosphere is everything, and here the painfully believable performances produce a convincingly claustrophobic environment of sexual uncertainty. Isolated in space and time, the family's blank home is like a desert island. Once the nominal restraints of authority are removed all behaviour is permissable, no matter how deviant is appears to an outsider like Derek. The relationship between Jack and Julie is beautifully underplayed, evolving from typical bickering to a deeper, more erotic understanding. The characters of Tom and Sue are necessary, and work well, as a counterpoint to this teenage lust - they can flirt with 'unusual' behaviour and get away with it, because their age makes them innocent. However, this structure relies on the premise that lying under our veneer of civilisation is a will to do whatever we want. While The Cement Garden doesn't make a particularly energetic case for such hidden barbarity, it does illuminate the possibility in an alluring and compelling way.