In the late 1970s Brian Millar did extensive parapsychological research under John Beloff at the University of Edinburgh (through a Perrott-Warwick studentship) and then at the University of Utrecht. He has published extensively in the field, especially on observational theories of psi. Despite this fascination Millar is no ‘true believer’ and could as well bear the title of ‘skeptic’. Both aspects can be traced to his considerable practical experience as experimenter: repeatedly no psi. Millar believes there are two plausible explanations: the obvious one is that psi may not exist. The other is that there is something weird going on with the experimenter, over and above standard psychological effects. This avenue is explored in the observational theories.