‘The Handmaid’s Tale’ zeroes in on June and Serena as its end comes into view

“The Handmaid’s Tale” would appear to be returning at an auspicious time, as the overturning of Roe v. Wade has thrust Margaret Atwood’s dystopian vision into the spotlight. But the arc of this fifth season is ill-suited to the moment, more narrowly focused on the bond of hatred between June and Serena, at the expense of almost everything else.