The door to Addison Lockhart's room opens. Six-year-old Sara Belle walks in. The child seems lost and confused. Addison reaches out, grabs Sara's hand, and the room goes black. Addison's eyes open to find she's been transported several decades into the past. She's sitting in the back seat of a car. Sara is beside her. The car stops at an intersection. Moments later another vehicle in the opposite direction barrels through the stop sign, slamming into...