Mackinzy McCall is a few months younger than her brother Scott McCall. Agent Rafe McCall was a very heavy drinker. One night at a club he had hooked up with a women and gotten her pregnant. His four month pregnant wife, Melissa wasn't very happy about it, but forgave him. Mackinzy only communicated with the McCall family on a few occasions. She and her mother had moved to Washington when she was about 5. After a tragic event, she is forced to move back to Beacon Hills to stay with her grandparents. Mackinzy is pulled into the whirlwind of drama involved with her half-brother and his abnormal friends.