Tutankhamun's mummy
Detective Michael R. King and FBI profiler Gregory M. Cooper came together with an actual Egyptologist to form their own theory which was that Tutankhamun was murdered. With the use of forensic evidence and their extensive backgrounds in criminology, they came to the conclusion that he was likely murdered by one of his closest advisors, Ay. Ay did succeed Tutankhamun on the throne, so they used that as the motivation for the murder.
Rakni's Mound
Lorange was told by locals that the king had been buried in a stone chamber between two white horses, with logs piled on each other above. In fact he did find the remains of a horse, which gave off such a stench that it was still remembered in the 1940s and 1950s. However, the horse was above the top layer of logs, not below, and the story that a worker died from the smell was probably inspired by the reports about the excavation of Tutankhamun's tomb. The stone chamber may have been inspired by the pavilion built on the mound by Johan Koren. In 1927, Jan Petersen wrote that there was a legend in the village that King Rakni was buried in the mound in full armour, with a white horse, after being killed in a battle in the 7th century, and that warriors were buried in smaller mounds surrounding his; there were in fact originally many small mounds around the large one.