The abduction of eight year old Sarah Payne in Sussex fifteen years ago was one of the most disturbing crimes in living memory.
Hundreds of members of the public helped police search for the missing schoolgirl. Sadly, of course, Sarah wasn't found alive.
But the case lead to the formation of Sussex Search and Rescue - a group of dedicated volunteers who've saved many other missing people.
Malcolm Shaw was given an exclusive insight into their remarkable work.