An eyewitness’s identification of a perpetrator is a prevalent form of incriminating evidence presented in a criminal case. However, eyewitnesses are frequently mistaken, and their errors have led to the conviction of innocent individuals. For over a century now, psychologists have sought to understand the variety of factors that may influence the accuracy of eyewitness identification. This article reviews the current state of knowledge in the science of eyewitness identification according to the sequence of events that is likely to unfold from the time that an eyewitness makes an observation to the prosecution of the perpetrator of the crime.