This tale of nice ordinary folk doing bad things is a cartoonishly grisly comedy with a hint of Fargo, though without the off-kilter humour

The family that eats together stays together, they say. But the proverb will have to be tweaked for director Caden Douglas’s cartoonishly grisly comedy, in which a family’s regular Sunday dinner ends with the neighbour’s dog running around the back garden with a severed human arm clamped between its teeth. You could describe Mother Father Sister Brother Frank as Fargo-esque, in the sense that it’s a tale of nice ordinary folks doing bad stuff while snow falls serenely around them – though in truth it is less flavoursome and the humour is more obvious, not so deliciously off-kilter.

It is lunchtime at the Jennings’ house, where mom Joy (Mindy Cohn) is a picture of homely friendliness. Her husband Jerry (Enrico Colantoni) seems...