Naomi Alderman's "The Lessons" reflects the truth that the lessons life teaches often come too late. Hidden away in an Oxford back street is a crumbling Georgian mansion, unknown to any but the few who possess a key to its unassuming front gate. Its owner is the mercurial, charismatic Mark Winters, whose rackety trust-fund upbringing has left him as troubled and unpredictable as he is wildly promiscuous. Mark gathers around him an impressionable group of students: glamorous Emmanuella, who alway...