A strange but funny BBC Radio 4 'Afternoon Play' about sex, betrayal, the housing market and a love triangle that follows its own surreal logic. Kirsty is having an affair with a married man, Adrian. When his wife, Lucy, returns unexpectedly from a business conference, Kirsty hides in the attic. In a panic, she falls down the back of the attic into the cavity wall. A story then unfolds which combines the domestically mundane with the utterly bizarre. 'Cavity' stars Ingrid Oliver as Kirsty,...