The authors question the taken-for-granted notion of supervision. Their concerns arose out of an attempt to introduce "clinical" supervision into academia as a way of addressing an increasing number of the ethical issues which confront lecturers. They recognise that knowledge can impact adversely on students and that lecturers at times find themselves compromised. They settled on supervision as an organisational space in the domain of power in which to address the distress they observed. However, through their different experiences of supervision, they soon found themselves talking past each other. When clinical supervision meets educational supervision, several anomalies are brought to the fore. The authors draw on Foucault's notion of discourse, and of knowledge as power, in order to foreground these and conclude by cautioning against an uncritical acceptance of supervision as an ethical practice. They believe there is a benefit in bringing together the two discourses of clinical and educational supervision for further discussion.