There could be many 'gone missing' real stories. One common type is about people who go missing in the wilderness. For example, hikers might get lost due to bad weather, taking a wrong turn, or equipment failure. Search and rescue teams then have to work hard to find them. Sometimes they are found alive, but unfortunately, other times they are not.
The location is also crucial. If it's a rural area, the search might cover a large expanse of forest or fields. In an urban area, there could be many hiding places or places where a person could be held against their will. And if it's near water, like a river or a lake, the waterways need to be searched as well.
It depends. Sometimes shows might deviate from the real story for various reasons like creative choices or to make it more appealing to a wider audience.