The final part of this series looking at three brilliant contemporary scientists features Sir Tim Hunt, awarded the Nobel Prize for his discovery of the mechanism of how cells divide - a discovery fundamental to the life and growth of every single creature on the planet, as well as a vital clue into the mystery of cancer. Hunt recalls moments in his life that provided inspiration for his career as a scientist, from his father's intent scholarship which shaped his early methods to his mother's battle with cancer and the influence of this on his current position at Cancer Research UK. In his own words, Hunt recounts the events that informed his discovery, from chance encounters to life-changing conversations and reveals his own opinions on the thought processes, both logical and emotional, that led to his extraordinary discovery.