A horror film in the tradition of Night of the Living Dead, gathering a group of people in a house with an unexplained threat outside and observing as fear gives way to anger and violence. It's the Bottle Episode from Hell.

Gavin Williams' script has managed to pre-empt so much of the division and bias that we see in today's society and skilfully focuses it back on the root problem: hereditary abuse and toxic masculinity.

There's bleak realism behind the comedy, Cruttenden's twitchy performance suggesting that power games in this household are nothing new. The final scenes, anarchic and glorious, will not easily be forgotten.