What technique is described as revisiting the scene of the crime to gather more information?

Re-canvass is a technique specifically focused on revisiting the scene of a crime to gather additional information. This process involves conducting a thorough examination of the area again, often with a fresh perspective or new questions in mind, which can lead to uncovering overlooked details or new witnesses who may not have been available during the initial investigation.

This technique is particularly valuable in investigative work, as it allows private investigators to obtain new leads or corroborate existing evidence. By going back to the scene, an investigator can assess any changes that might have occurred since the initial visit, thereby enhancing the investigation's depth and accuracy.

While terms like re-examination, backtrack, and follow-up can imply reviewing evidence or information, they do not specifically point to the act of returning to the crime scene as re-canvass does. For instance, re-examination may refer to reviewing documents, backtrack could imply retracing steps taken previously, and follow-up generally refers to contacting previously interviewed individuals or checking on the status of leads, rather than physically revisiting the crime location.