TWIST, by Colum McCann

It’s a literary conundrum of sorts, how on the surface Colum McCann’s novel “Twist” feels narratively disheveled, with subplots warmed up and abandoned, and loose threads dangling as they do everywhere in life. But the parts are not the sum. McCann, author of six previous novels, including the National Book Award-winning “Let the Great World Spin,” clearly knows what he’s up to — every sentence feels placed with confidence — and through various authorial wiles he has produced a work at once enigmatic and urgent.