Meg Wolitzer presents three stories about the attraction and perils of reinvention. In “Kerosene,” by Simon Rich, timing is all in matters of invention. The reader is Santino Fontana. Attentive parents want to keep their baby safe at all costs in “The Cage,” by Tania James, read by Nicole Kang. And a widowed man looks for love—with some guidance from his late wife--in “The Dark,” by Jess Walter, read by Jason Alexander.