This workshop builds on the success of prior workshops that brought together HCI researchers to share stories about ethical challenges faced when conducting research in sensitive settings. There is growing recognition that reflective and empathetic approaches are needed to conduct ethical research in settings involving people who might be considered vulnerable or marginalized. At our previous workshops, researchers discussed personal experiences and described the complex challenges they have faced in research as diverse as designing information systems for families of children in palliative care [6] to analyzing social media posts about mental health [1]. In this follow-up workshop we aim to extend opportunities for knowledge-sharing, build on the lessons learned, and generate a range of resources to help HCI researchers manage complex ethical issues when working in sensitive settings.