This special issue of Anthropology in Action collects essays arising from the 4th Post-graduate Conference of the Royal Anthropological Institute, held at Brunel University (London) on 3–4 September 2014. The event aimed to explore a variety of perspectives concerning the production and the ownership of anthropological knowledge, including issues of authority and ethical responsibility. We also welcomed reflections on the opening of new interstitial fieldsites in between the structured components of anthropological research. Our interest focused on the dilemmas arising from the definition of the field itself, in the guise of the epistemological delimitation of its boundaries and how these affect the relational world within it. We focused on the co-dependence between these factors and on the influence of increasing interconnectedness through advanced and progressively widespread communication technologies (cf. Kelty 2009).