The story of three private moments in the life of Alan Turing, the great code-breaker, mathematician, and computer theorist. In particular this story explores Turing’s last great theory, one he never lived to see proven, ‘morphogenesis’ – a theory of pattern formation, using simple reaction-diffusion equations. The story explores Turing’s love of the maths behind life, and also his contemplation of mortality. A short story from the award-winning author Jane Rogers, with an afterword from Professor Martyn Amos.