 Flashbacks show both the build-up to, and the event of Jack's wedding to Sarah, a former patient whom he "fixed" after she was injured in a car accident.Jack agonizes over his vows, and his father, Christian (John Terry) surprises him by showing up, giving Jack advice about writing the vows by the pool.His father says that Jack's strength is commitment, and that his problem is that he is "just not good at letting go."