The Spark conveys with irresistible lucidity the profound devotion with which a mother can love her child. Kristine Barnett's son Jacob has an IQ higher than Einstein’s and a photographic memory. At nine he developed an original theory in astrophysics that may earn a Nobel Prize. But Jake's story is all the more remarkable because his extraordinary mind was almost lost to autism. When the experts wanted to restrict his behaviour – staring at shadows on the wall, stars, patterns – Jake withdrew into his own world. But against all the professional advice, Kristine decided to follow Jacob's passions – his 'spark'. The results were beyond anything anyone could have imagined. This wonderful story of triumph against the odds is one that will inspire everyone, particularly parents.