Cavity was glitteringly original. Sean Grundy's play was a comedy about adultery, fast, sexy and I'd have said 'edgy' too, if that word hadn't recently been bled of meaning. Here, I intend it to convey going as close as possible to the borders of descriptive propriety while employing sharp wit to induce a slightly shocked delight. Alison Crawford directed a marvellous cast - Julian Rhind-Tutt, Ingrid Oliver and Kerry Godliman - with glorious assurance. Afternoon Play is not often as utterly entertaining as this. Everyone, me included, usually moans about it. Frequently, these days, we must admit we can be wrong. If you missed Cavity, you missed a treat.