Savage and utterly unforgiving, this is a perfectly executed drawing-room comedy that lacerates, leaving you laughing at both its malice and its despair.

Rarely does musical theatre get more urgent, authentic or potent than this.

It’s a pity that the whole of this production is somewhat disjointed and misshapen, but Jonny Lee Miller and Benedict Cumberbatch are without doubt its thumping heart.

Family dysfunction is not a new recipe for comedy, but then again, holidays can best be spent on the tried and true.

A firecracker of a mother bounces off the walls of her middle-class home, pulling her husband and daughter into the maelstrom.