Five-year-old Isa is rushed to A&E after being hit by a car and trapped underneath it, and doctors suspect the impact may have caused serious internal damage, as well as significant head injuries. Meanwhile, 26-year-old Tom is treated after slicing through his leg with a circular saw, with medics fearing the blade has cut so deeply into the muscle tissue that it could starve his leg of blood. Plus, 85-year-old retired actor Donald comes to the hospital with pain in his bladder, and consultant Faheem is concerned there may be an infection.