According to producers of Crimewatch, about a third of its cases are solved, half of those as a direct result of viewers' calls.

Thanks to the program, some of UK's most notorious criminals were caught. Among them were Michael Sams, a rapist, kidnapper, extortionist and murderer.

.A similar program, America's Most Wanted, was introduced in the US in 1988. It is hosted by former Hollywood real estate businessman John Walsh, who created the show after the murder of his 6-year-old son in 1981.

About the broadcaster:

CJ Henderson is a foreign expert for China Daily's online culture department. CJ is a graduate of the University of Sydney where she completed a Bachelors degree in Media and Communications, Government and International Relations, and American Studies. CJ has four years of experience working across media platforms, including work for 21st Century Newspapers in Beijing, and a variety of media in Australia and the US.

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