One Way Pendulum

Each of the Groomkirbys has an idee fixe. Kirby is teaching his speak-your-weight machines the "Hallelujah Chorus"; his mother pays the neighbour to eat their left-overs; his aunt in her wheelchair is convinced she's touring the Hebrides; his father is building the Old Bailey in the living-room. When this is complete the judge and jury move in with some bizarre results...4 women, 10 men