Tess is surprised to discover that her in-laws, are the couple who stopped to help a hit and run victim; they are equally surprised to discover she is pregnant. As Tess tries to stop Evan and Tom fussing about her headaches and blurred vision, PJ begins to suspect the hit and run victim was injured by something far more personal than a vehicle. While PJ and Jo meet the man's wife and teenaged son and try to piece together what happened, Tess' mother-in-law reveals herself as a gynaecologist and diagnoses Tess with Pre-Eclampsia—a potentially life- threatening condition for her and her baby.