On December 2, 2011, the show returned on a different network called Lifetime. In March 2013, Lifetime formally ended the program. Walsh then produced his daytime television show, The John Walsh Show, syndicated from 2002 to 2004 on NBC.

Walsh was the part-owner of the Museum of Crime and Punishment in Washington, D.C. He additionally had an investigative narrative assignment, The Hunt with John Walsh, which appeared on CNN in 2014.

After dealing with the tragedy of their lost son, the Walsh family established the Adam Walsh Child Resource Center. The center is a non-benefit association devoted to authoritative changes in the justice system. Initially, the focus was in West Palm Beach, Florida; Columbia, South Carolina; Orange County, California; and Rochester, New York. They collaborate with the National Center for Missing and Exploited Children (NCMEC), where John Walsh is the top managerial staff.

The Walsh family started a political crusade to help lost and misguided youngsters. Despite bureaucratic and authoritative issues, John and Revé's endeavors prompted the Missing Children Act of 1982 and the Missing Children's Assistance Act of 1984.

Walsh keeps on helping Congress and state governing bodies on missing kids and other crimes to this day. The Adam Walsh Child Protection and Safety Act was enacted by U.S. President George W. Bush on July 27, 2006, after a two-year journey through the United States Congress.

Walsh seriously campaigned for the National Center for Missing and Exploited Children. It concentrates on a national sex crime registry, intense punishments for not enrolling as a sex offender after getting discharged into society, and access by natives to state sites that track sex guilty parties. The deal's framework adds up to making criminals wear a long-lasting Scarlet Letter, paying little respect to the circumstances of their cases.

By the late 1980s, numerous shopping centers, retail chains, general stores, and other retailers had embraced what is known as "Code Adam." A "Code Adam" is a movement initially started by Walmart stores in the southeastern United States. It declared that there would be a standard action when a kid is absent in a store or if a store worker or client finds a child. If the youngster is lost or missing, all entrances and exits will be bolted, and a store representative will be posted at entry. A description of the child would then be announced in the store. This has prevented the kidnapping of millions of children and has also helped parents find their missing children.