The practice of ethics is a constant negotiation between universal principles and specific situations, and so the ‘case study’ plays a key role. We first developed our ‘practising ethics’ methodology through a process that involves responding to hotspots, drawing on touchstones, revealing blindspots and re-imagining moonshoots, as the four cases studies below demonstrate. We later extended this to include keystones and milestones, as explored in our book through six new case studies: Belen Desmaison’s ‘Research amid despair: participatory architecture in times of hunger’; Vikas John’s and Priya Singh’s ‘The transitoriness of research ethics: when values and practices travel’; Ariana Markowitz’s with Cristian Olmos Herrera’s, ‘Full-bodied ethics or “You look good in short skirts’’’; Zubaida Umar Baba’s, ‘Crying in the field: I struggled to control my own emotions, feeling tears welling up inside me’; Naomi Gibson’s, ‘“Reperforming” as a practice for preserving confidentiality’; Judit Ferencz’s, ‘Halema’s kitchen’.