Storrs McCall presents an original philosophical theory of the nature of the universe based on a striking new model of its space-time structure. He shows that this theory can illuminate a wide variety of hitherto unresolved philosophical problems: these include the direction and flow of time, the nature of scientific laws, the interpretation of quantum mechanics, the definition of probability, counterfactual semantics, and the notions of identity, essential properties, deliberation, decision, and free will. A particular instance of the explanatory powers of the proposed space-time model is its account of quantum non-locality in the EPR and GHZ experiments. The fact that the model explains and throws light on such a broad range of problems constitutes strong evidence that the universe is as the model portrays it.