That is a very good question. If indeed Debardeleben was as prominent a serial killer as most experts think he was, he had a very good method because they never found any bodies that were tied to him that he had intentionally hid. The few murders he was essentially responsible in LE's eyes anyway, the bodies were found relatively easy. However IMHO, he has a lot of buried secrets. Years ago I spoke to a guy who is sort of an expert on all things Debardeleben, and he thinks he used bodies of water to get rid of bodies and old vehicles. As far as I know, LE has never released any information on any bodies found that were linked to Debardeleben.