Imogen is my best friend’s younger sister. I have known her for fifty years, since she was about eight years old. She was always Harris’s little sister, somewhat bratty, and to be honest, a bit of a pain in the arse when she was a kid, as little sisters can be. Over the years, Harris and I saw each other on a sporadic basis, with work and other commitments resulting in long periods where our relationship became dormant. O...