You can pick between a pair of low-key postapocalypses this month. In Jonathan Lethem’s THE ARREST (★★★★☆ , out now, Atlantic Books), electronic devices and cars have simply stopped working. The protagonist is a former screenwriter; when an old colleague arrives in a nuclear-powered supercar, it disrupts life in his settlement. We said: “A pleasingly idiosyncratic take on things falling apart, related with much humour and poignancy.” In Thomas McMullan’s