Mac was Megan’s first love and a friend of her older brother Ben. Megan and Mac had child a together, Libby, who died just a few months into her short life. Several years older than Megan, Mac took in the runaway girl when she was just 16, and the two quickly began a relationship. When Megan got pregnant, she and Mac reluctantly welcomed the child—but after a disaster in which Libby perished under Megan’s watch, Mac left abruptly after helping Megan bury the baby’s corpse. Megan never saw or heard from Mac again. Authorities investigate him as a possible suspect in Megan’s murder but learn that he died years ago.