The highway patrol investigated a fatal two-vehicle crash in Williams County Wednesday afternoon.At about 1:30pm yesterday, two cars collided at Williams County roads K and 13.46 year old Andrea Cummins of Montpelier was killed in the accident, and was pronounced dead at the scene.A passenger in the Cummins auto suffered serious injuries, and was transported by Life Flight to St. Vincent Medical Center in Toledo.The other driver, 45 year old Kelly Grey of Napoleon was injured, and transported to the Montpelier Hospital.