There are a small number of well-known cases of cyberstalking. In general, however, these cases have been poorly documented and have not been subjected to detailed analysis. Furthermore, almost every reported case concerns events that have taken place in the United States, and there appear to be few, if any, fully documented cases that describe incidents in other technologically sophisticated societies, such as the UK, Australia and New Zealand.This paper sets out to achieve a number of related objectives. First, the paper attempts to present the first detailed academic case study of cyberstalking. Second, since the case described is of UK origin, it is hoped that attention will be drawn to the obvious, but often overlooked, fact that cyberstalking is a truly international problem, a problem that affects all developed societies and crosses international boundaries. Third, the paper represents an initial attempt to argue that cyberstalking should be seen as a phenomenon that is distinct from 'conventional' stalking. Finally, it is hoped that the discussion section of the paper will stimulate further analysis, debate and research.Before examining the case study itself, a brief description of how data was collected and verified may be of value. A number of informal interviews were held with the final victim described by the case study. These interviews were used to obtain basic information, such as the victim's age, and also helped to clarify any points that arose as work progressed. It was also possible to make contact with the other victims described in the text (via e-mail) in order to verify facts and gain more detail about the activities of the stalker. As described in the case itself, the spouse of the final victim was able to record a great deal of data on the activities of the stalker, and this data was made available to the authors. Since much of the data was recorded automatically via specialised software, it was extremely detailed. As an example, it was possible to examine the conversations between the victim and the stalker in great depth since they had been recorded in their entirety. It should be noted that the availability of such comprehensive data is