To have freedom of will is to say, 'I could have chosen to do otherwise.' But how can we make such a claim in a world of causes and effects? In a world where everything that happens is part of a great causal chain? Where every event, including every human decision and action, was determined at the creation of the universe? In this book I look at a particular problem faced by those who argue we have free will - the problems of Anomalous Monism.