Episode Title:Louis Pasteur.Episode Description:Louis Pasteur sets out to solve some of the greatest medical mysteries of all time. The great French scientist, struggling with his own limitations from a stroke, is not deterred by scientific criticism nor failed experiments. His determination never deserts him as he faces his greatest challenge of all. Will a rabies vaccine tested only on animals save a boy’s life? Pasteur had the courage to look into the unseen world and his perfected vaccines are his gifts to mankind.