An ethically problematic clinical case is used to illustrate the potential importance of understanding clinical ethics in an interdisciplinary context. Whilst much has been written on ethics education for multidisciplinary and interdisciplinary teams, we argue that it is important that both healthcare professions and healthcare teams are able to look outside their own disciplinary ethos and sometimes outside their formal teams when considering the ramifications of an ethical issue. A complex (fictional but based on the authors' pooled experiences) case involving the delivery of a new-born from a mother with HIV is used to illustrate this, because multiple clinical teams will be involved at different times and in parallel with one another.