S1, E2: More and more we are finding that the unique characteristics that make each one of us an individual, from our basic physical attributes to the complexities of our personality, can be traced back to the subtle mix of genes we received at the moment of conception. But how much do these genes actually predict our destiny? And how much can that destiny be changed throughout our lives? Is it nature or nurture that builds us? The genetic age has opened up a huge realm of possibilities. Will we be able to read our own lives before we live them, predict our deaths and rewrite the story that is written in our genes?