This paper presents an account of Iris Murdoch's engagement with the work of Martin Heidegger. It covers her early discussions and evaluations of him in The Sovereignty of Good, through to her late Heidegger manuscript, covering both his early and late work. It details the significant changes that occur in her evaluation of him, as well as the key sympathies identified and criticisms developed in the late manuscript. The focus is on her insistence that only 'the Good', and not Heidegger's (...) 'Being', can fill the space left by the traditional Western God, and of the related failure in Heidegger to account properly for value. (shrink)