We revisit the history of dark side leadership research over the past twenty years. The literature has developed from the view that this type of leadership is simply the dark side of charisma to a well defined construct. We emphasize the work of Hogan and colleagues who have developed an effective tool for the measurement of dark side leadership along eleven dimensions. The tool is called the Hogan Development Survey or HDS. The HDS has proven to be robust, valid, and reliable. We also suggest that the HDS is a helpful tool for organizing the academic literature regarding dark side leadership and related terms such as destructive and narcissistic leadership. We suggest that many of these related terms are more specific or narrow manifestations of dark side leadership.