Kit Caless has something to tell you. When Kit was a child, his father worked for the UK Ministry of Defence's security forces. But Kit didn't know it at the time--he wasn't allowed to know. And reflecting on that, he finds himself thinking about other secrets. Keeping a secret alters everything. How you view yourself. How you act in social groups. How you interact with a loved one, a boss, a colleague, a neighbour. Depending...