In the Heart of the Night: Kristie Mewis Creeps from the Warmth of Their Shared Bed, Silent as a Shadow, to Snatch Sam Kerr’s Phone—Its Screen Glowing with the Unanswered Incessant Buzz of a Mysterious Woman’s Messages—Then Retreats, Barefoot and Hollow, to the Cold Solitude of the Living Room Couch, Her Mind Racing, While Down the Hall Their One-Year-Old Son Jagger Sleeps On, Innocent and Unaware That the Foundation of Their Family Is Trembling in the Dark