In a "photo lineup," what does a witness observe?

In a "photo lineup," a witness observes multiple mugshots. This process is designed to help the witness identify a suspect from a set of photographic images, typically featuring several individuals who look similar to the suspect in question. The lineup will generally include photos of the suspect along with others who have similar characteristics, ensuring that the witness has an opportunity to make an identification without the influence of a live individual.

Using multiple mugshots helps reduce the risk of misidentification, which can occur if the witness is only presented with a single suspect or a live person. It allows for a more controlled environment for making an identification, as witnesses can compare and contrast the images presented to them. Thus, the essence of a photo lineup lies in the inclusion of multiple individuals' photographs, making it essential for proper procedures in witness identification.