The eighteenth century witnessed an explosion in new literary and creative forms that rapidly expanded, and the relations between which became more complex. This has typically been described as a period that ushered in the novel form: the malleability of the concept of the novel genre and its history opens up intriguing possibilities for its role within wider networks of interartistic relationships in the period. This Companion is concerned with how the fertile conversations that different artforms enjoyed in the long eighteenth century intersected fruitfully with the emergent shapes of prose fiction. The essays comprising this volume range from the important overview to the case study, providing readers with a unique opportunity to navigate a vast and sprawling terrain through engaging scholarly insights.