John Walsh is an American television personality, criminal investigator, and human rights advocate. He is best known as the host of the long-running show America's Most Wanted, which aimed to capture fugitives and raise awareness about missing persons. Walsh's work has significantly contributed to solving numerous cases and bringing criminals to justice. In addition to his television career, John Walsh has been involved in various advocacy efforts, particularly focusing on child safety and victims' rights. He co-founded the National Center for Missing & Exploited Children, which provides resources and support for families affected by abductions and exploitation.