SM has long seemed just on the edge of breaking into the literary big time. Her last novel (Ghost Wall, pbk £8.99) was a slim masterpiece in 2018, and this builds on the same eerie atmosphere and familial claustrophobia. Twelve narrators are trapped by rain in their holiday cottages on the banks of Loch Lomond. Over the course of one day they observe each other – sometimes with amusement, sometimes cruelty – and as the night falls, things begin to go terribly wrong.
