What does it mean to be lucky? How might we mitigate the effects of bad luck and maximise those of good? Is there actually such a thing as ‘luck’—some force that intervenes between desire and its consummation, that impedes or hastens it? To answer these questions, David Flusfeder sets out on a search for the definition of luck. Starting at the British Library in London, and following the dictates of an online randomiser that decided the chapter order, Flusfeder follows in the footsteps of some victors of luck and those who were defeated by it, from ancient times to the modern day. Luck asks fundamental questions about the world, ourselves, our place in it. In these questions, about our relationships to fortune, to risk, to opportunity, to chance, destiny and fate, we find ourselves deciding who we are and how we might choose to live.