The National has become the graveyard of talent: Manor, at the Lyttelton, reviewed

Somewhere in the wilds of England a stately home is collapsing. Rising floodwaters threaten the foundations. Storms break over the leaking roofs. Inside, an argument rages between a snooty moron, Lady Diana, and her drunken Marxist husband who used to be rock star.

This is the chaotic opening of Moira Buffini’s country-house drama Manor. The angry husband picks up a hunting rifle and blasts ornaments to smithereens. Then he chases his wife to the top of a staircase where she hits him with a candlestick. Once the fight ends, more commotion erupts as various groups of evacuees rush in through the front doors. Two women arrive from south London. They’re soaking. A daft local priest shows up, followed by a white supremacist with a broken ankle. Much later, his wife is carried in suffering from a bloodied spine.

This cluttered script is well outside Buffini’s normal range. She likes intimate, delicate chamber pieces, and she enjoys pairing characters with complementary or contrasting qualities.