The investigation into Elizabeth Smart's abduction illustrates the benefits of careful eyewitness management. The sole eyewitness, her nine-year-old sister Mary Katherine, was handled with caution by the FBI and police. To avoid implanting false memories or misleading her, they refrained from using standard procedures like police line-ups or pushing for a composite sketch. This preservation of her memory proved crucial when, months later, she recalled the abductor's voice from a prior encounter, leading to his identification and Elizabeth's safe return.