Nine months pregnant, Trudy lives in a London terraced house gone to seed. John, her husband, is not here - but his property-developing brother Claude is a regular visitor. Claude has seamy designs on both the house and his sister-in-law, and Trudy finds herself entranced by him. Soon the pair hatch a plan to permanently remove John from the scene by poisoning one of his favourite fruit smoothies. But there is a witness to their plot: the inquisitive, perceptive, and vengeful resident of Trudy's womb...