Georgie McCool knows her marriage is in trouble. That it’s been in trouble for a long time. She still loves her husband, Neal, and Neal still loves her, deeply — but that almost seems beside the point now. Maybe that was always beside the point. Two days before they’re supposed to visit Neal’s family in Omaha for Christmas, Georgie tells Neal that she can’t go. She’s a TV writer, and something’s come up on her show; she has to stay in...