Context, plot, character and theme have dominated modern critical understandings of Wilkie Collins’s fiction, and there are relatively few discussions of his idiom, tone or voice. Collins himself seems to have encouraged this approach to his work, and repeatedly downgraded the question of literary style. But the topic takes us to the heart of his work, and helps us both to understand the nature and quality of his achievement and to see the relationship within it between questions of language and signification and those of identity and the sense of self.  Collins is fascinated in many of his fictions by what it means to have a troubled, false or non-existent identity, to have bodies and sensations that are not properly one’s own; the most revelatory texts and inscriptions in his work are often anonymous or unstylised. This chapter is about how Collins’s work explores and exposes the vulnerability of style, as it stages style’s appearances and disappearances.