In his reference letter for Murdoch’s 1947 fellowship application at Newnham College, Cambridge, her erstwhile Oxford undergraduate tutor, Donald MacKinnon, remarks that Murdoch is ‘on the threshold of creative work of a high order’. This chapter outlines the nature of that ‘creative work’ and its early development. We show how Murdoch’s close study of the Christian existentialist philosopher and playwright Gabriel Marcel (1883–1973) came to inflect both her early critique of Jean Paul Sartre’s existentialism and her first attempts to show the limits of logical positivism. We explain how once at Cambridge, Murdoch’s exposure to Wittgenstein’s method, through her philosophical friendship with Elizabeth Anscombe, gave her the conceptual means to recast those aspects of Marcel’s thought (as well as those of Martin Buber) that she believed were important but, as she wrote in her application, ‘vague’. We show, finally, how both strands of Murdoch’s thinking are later brought into synchrony in the much-discussed example of M&D. This, in turn, allows us to isolate Murdoch’s understanding of the individual’s relation to their own ‘ghostly past’ and to reveal the importance of Murdoch’s early encounters with Anscombe and Marcel.